遠端 Ubuntu 16.04 LTS 主機上安裝的一個套件受到 USN-3696-1 公告中所提及的多個弱點影響。

  - 在 4.12.9 之前的 Linux 核心中，drivers/acpi/acpica/nseval.c 的 acpi_ns_evaluate() 函式不會排清運算元快取並造成核心堆疊轉儲存，進而允許本機使用者透過特製的 ACPI 表格，從核心記憶體取得敏感資訊並繞過 KASLR 保護機制 (在 4.9 及更早版本的核心中)。(CVE-2017-13695)

  - 在 Linux 核心 4.11 之前版本中，kernel/events/core.c 的 perf_cpu_time_max_percent_handler 函式允許本機使用者透過大值造成拒絕服務 (整數溢位)，或可能造成其他不明影響，錯誤的 sample-rate 計算結果即為一例。(CVE-2017-18255)

  - 在 Linux 核心 4.11 之前版本中，fs/f2fs/data.c 的 __get_data_block 函式允許本機使用者透過具有 FS_IOC_FIEMAP ioctl 的特製 open 和 fallocate 系統呼叫，來造成拒絕服務 (整數溢位和迴圈)。(CVE-2017-18257)

  - Linux 核心 3.18 至 4.16 版本不會使用 dxfer_direction=SG_DXFER_FROM_DEV 和空位元 cmdp 正確處理 /dev/sg0 上的 SG_IO ioctl。這可導致最多將 1000 個核心堆積頁面複製到使用者空間。此問題已在 https://github.com/torvalds/linux/commit/a45b599ad808c3c982fdcdc12b0b8611c2f92824 上游修正。此問題的範圍有限，因為使用者通常沒有存取 SCSI 裝置的權限。反之，例如 Nero 使用者手冊建議執行 `chmod o+r+w /dev/sg*`，以使裝置可供存取。注意：第三方對此報告的相關性存有疑慮，指出攻擊者必須具備 CAP_SYS_ADMIN 和 CAP_SYS_RAWIO 功能才能利用此問題，而這基本不可能。(CVE-2018-1000204)

  - 在 4.16 之前的 Linux 核心中，drivers/scsi/libsas/sas_scsi_host.c 允許本機使用者藉由觸發特定失敗情形來導致拒絕服務 (ata qc 洩漏)。注意：第三方對此報告的相關性存有爭議，因為只有在靠近 SAS Host Bus Adapter 纜線的情況下，實際位置靠近的攻擊者才會遭遇失敗。(CVE-2018-10021)

  - 在 4.13 之前的 Linux 核心中，當使用不明架構和編譯器時，kernel/wait.c 中的 kernel_wait4 函式可能會允許本機使用者觸發嘗試使用 -INT_MIN 值，進而引致拒絕服務。(CVE-2018-10087)

  - 在 4.13 之前的 Linux 核心中，當使用不明架構和編譯器時，kernel/wait.c 中的 kernel_wait4 函式可能會允許本機使用者透過使用 -INT_MIN 引數，進而引致拒絕服務。(CVE-2018-10124)

  在使用 Intel Core 型微處理器的系統上，使用延遲 FP 狀態還原技術的系統軟體可能會允許本機處理程序藉由推測執行旁路來推斷其他處理程序的資料。(CVE-2018-3665)

  - 在 Linux 核心 4.16.11 之前版本、4.14.43、4.9.102 和 4.4.133 版本中，處理探查、中斷連線和重新繫結作業時會發生多個爭用條件錯誤，這讓攻擊者可以透過傳送多個 USB over IP 封包來觸發釋放後使用情形或 NULL 指標解除參照問題。(CVE-2018-5814)

  - 在 4.15.7 及更早版本的 Linux 核心中，drivers/block/floppy.c 的 fd_locked_ioctl 函式中發現一個問題。磁碟片驅動程式會將核心指標複製到使用者記憶體，以回應 FDGETPRM ioctl。攻擊者可傳送 FDGETPRM ioctl 並利用取得的核心指標得知核心程式碼和資料的位置，進而繞過如 KASLR 的核心安全性保護機制。(CVE-2018-7755)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

遠端 Ubuntu 14.04 LTS 主機上安裝的一個套件受到 USN-3696-2 公告中所提及的多個弱點影響。

  - 在 4.12.9 之前的 Linux 核心中，drivers/acpi/acpica/nseval.c 的 acpi_ns_evaluate() 函式不會排清運算元快取並造成核心堆疊轉儲存，進而允許本機使用者透過特製的 ACPI 表格，從核心記憶體取得敏感資訊並繞過 KASLR 保護機制 (在 4.9 及更早版本的核心中)。(CVE-2017-13695)

  - 在 Linux 核心 4.11 之前版本中，kernel/events/core.c 的 perf_cpu_time_max_percent_handler 函式允許本機使用者透過大值造成拒絕服務 (整數溢位)，或可能造成其他不明影響，錯誤的 sample-rate 計算結果即為一例。(CVE-2017-18255)

  - 在 Linux 核心 4.11 之前版本中，fs/f2fs/data.c 的 __get_data_block 函式允許本機使用者透過具有 FS_IOC_FIEMAP ioctl 的特製 open 和 fallocate 系統呼叫，來造成拒絕服務 (整數溢位和迴圈)。(CVE-2017-18257)

  - Linux 核心 3.18 至 4.16 版本不會使用 dxfer_direction=SG_DXFER_FROM_DEV 和空位元 cmdp 正確處理 /dev/sg0 上的 SG_IO ioctl。這可導致最多將 1000 個核心堆積頁面複製到使用者空間。此問題已在 https://github.com/torvalds/linux/commit/a45b599ad808c3c982fdcdc12b0b8611c2f92824 上游修正。此問題的範圍有限，因為使用者通常沒有存取 SCSI 裝置的權限。反之，例如 Nero 使用者手冊建議執行 `chmod o+r+w /dev/sg*`，以使裝置可供存取。注意：第三方對此報告的相關性存有疑慮，指出攻擊者必須具備 CAP_SYS_ADMIN 和 CAP_SYS_RAWIO 功能才能利用此問題，而這基本不可能。(CVE-2018-1000204)

  - 在 4.16 之前的 Linux 核心中，drivers/scsi/libsas/sas_scsi_host.c 允許本機使用者藉由觸發特定失敗情形來導致拒絕服務 (ata qc 洩漏)。注意：第三方對此報告的相關性存有爭議，因為只有在靠近 SAS Host Bus Adapter 纜線的情況下，實際位置靠近的攻擊者才會遭遇失敗。(CVE-2018-10021)

  - 在 4.13 之前的 Linux 核心中，當使用不明架構和編譯器時，kernel/wait.c 中的 kernel_wait4 函式可能會允許本機使用者觸發嘗試使用 -INT_MIN 值，進而引致拒絕服務。(CVE-2018-10087)

  - 在 4.13 之前的 Linux 核心中，當使用不明架構和編譯器時，kernel/wait.c 中的 kernel_wait4 函式可能會允許本機使用者透過使用 -INT_MIN 引數，進而引致拒絕服務。(CVE-2018-10124)

  在使用 Intel Core 型微處理器的系統上，使用延遲 FP 狀態還原技術的系統軟體可能會允許本機處理程序藉由推測執行旁路來推斷其他處理程序的資料。(CVE-2018-3665)

  - 在 Linux 核心 4.16.11 之前版本、4.14.43、4.9.102 和 4.4.133 版本中，處理探查、中斷連線和重新繫結作業時會發生多個爭用條件錯誤，這讓攻擊者可以透過傳送多個 USB over IP 封包來觸發釋放後使用情形或 NULL 指標解除參照問題。(CVE-2018-5814)

  - 在 4.15.7 及更早版本的 Linux 核心中，drivers/block/floppy.c 的 fd_locked_ioctl 函式中發現一個問題。磁碟片驅動程式會將核心指標複製到使用者記憶體，以回應 FDGETPRM ioctl。攻擊者可傳送 FDGETPRM ioctl 並利用取得的核心指標得知核心程式碼和資料的位置，進而繞過如 KASLR 的核心安全性保護機制。(CVE-2018-7755)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

遠端 Oracle Linux 6/7 主機上安裝的套件受到 ELSA-2018-4161 公告中提及的多個弱點影響。

  在 4.10.9 及之前版本的 Linux 核心中，「mm/mempolicy.c」的 set_mempolicy 和 mbind compat syscalls 中，不正確的錯誤處理允許本機使用者透過觸發特定點陣圖作業失敗，從未初始化的堆疊資料取得敏感資訊。(CVE-2017-7616)

  在 4.11 之前的 Linux 核心及 4.9.36 之前的 4.9.x 中，net/netfilter/xt_TCPMSS.c 的 tcpmss_mangle_packet 函式讓遠端攻擊者得以藉由在 iptables 動作中利用 xt_TCPMSS 的存在，造成拒絕服務 (釋放後使用和記憶體損毀)，也可能造成其他不明影響。
    (CVE-2017-18017)

  在  4.15.8、4.14.25、4.9.87、4.4.121、4.1.51 和 3.2.102 之前的 Linux 核心中，
    _sctp_make_chunk() 函式 (net/sctp/sm_make_chunk.c) 存在一個錯誤，在處理 SCTP 時，惡意本機使用者可惡意利用封包長度，造成核心損毀和 DoS。(CVE-2018-5803)

  在 Linux 核心中，net/dccp/output.c 的 dccp_write_xmit() 函式有 null 指標解除參照情形，本機使用者因而得以透過幾個特定的特製系統呼叫來引致拒絕服務。(CVE-2018-1130)

  在 4.12.3 版及其之前版本的 Linux 核心中，當啟用 CONFIG_XFRM_MIGRATE 時，net/xfrm/xfrm_policy.c 不會確保 xfrm_userpolicy_id 的 dir 值等於或小於 XFRM_POLICY_MAX，進而允許本機使用者透過 XFRM_MSG_MIGRATE xfrm Netlink 訊息引致拒絕服務 (超出邊界存取)，或可能造成其他不明影響。(CVE-2017-11600)

  - 在 4.13 之前的 Linux 核心中，當使用不明架構和編譯器時，kernel/wait.c 中的 kernel_wait4 函式可能會允許本機使用者觸發嘗試使用 -INT_MIN 值，進而引致拒絕服務。(CVE-2018-10087)

  - 在 4.13 之前的 Linux 核心中，當使用不明架構和編譯器時，kernel/wait.c 中的 kernel_wait4 函式可能會允許本機使用者透過使用 -INT_MIN 引數，進而引致拒絕服務。(CVE-2018-10124)

請注意，Nessus 並未測試此問題，而是僅依據應用程式自我報告的版本號碼。

遠端 OracleVM 系統缺少可解決重大安全性更新的必要修補程式：

  - dm：修復 dm_get_from_kobject 和以下項目之間的爭用
    __dm_destroy (Hou Tao) (CVE-2017-18203)

  - drm：udl：正確檢查 framebuffer mmap 位移 (Greg Kroah-Hartman) [Orabug：27986407] (CVE-2018-8781)

  - kernel/exit.c：呼叫 wait4 時避免出現未定義的行為，wait4(-2147483648, 0x20, 0, 0xdd0000) 觸發：
    UBSAN：kernel/exit.c:1651:9 中存在未定義行為 (mridula shastry) [Orabug：27875488] (CVE-2018-10087)

  - kernel/signal.c：避免 kill_something_info 中出現未定義的行為。在使用者空間 I 中執行 kill (72057458746458112, 0) 時，我遇到以下問題時。(mridula shastry) (CVE-2018-10124)

  - 藍牙：驗證 sco_sock_bind 中的通訊端位址長度。(mlevatic) [Orabug：28130293] (CVE-2015-8575)

  - dccp：檢查 sk 以確定 dccp_sendmsg 的關閉狀態 (Alexey Kodanev) [Orabug：28220402] (CVE-2017-8824) (CVE-2018-1130)

  - sctp：驗證 _sctp_make_chunk 中的新區塊大小 (Alexey Kodanev) [Orabug：28240075] (CVE-2018-5803)

  - mm/mempolicy.c：修復 set_mempolicy 和 mbind 中的錯誤處理。(Chris Salls) [Orabug：28242478] (CVE-2017-7616)

  - xfrm：policy：檢查原則方向值 (Vladis Dronov) [Orabug：28264121] (CVE-2017-11600) (CVE-2017-11600)

  - x86/fpu：將 eager FPU 設為預設 (Mihai Carabas) [Orabug：
    28156176] (CVE-2018-3665)

  - KVM：修復 write_mmio 中的堆疊越界讀取 (Wanpeng Li) [Orabug：27951287] (CVE-2017-17741) (CVE-2017-17741)

  - xfs：如為 xfs_bmap_extents_to_btree，則將格式設回範圍 (Eric Sandeen) [Orabug：
    27989498] (CVE-2018-10323)

  - 藍牙：防止 EFS 元素的堆疊資訊洩漏。
    (Ben Seri) [Orabug：28030520] (CVE-2017-1000410) (CVE-2017-1000410)

  - ALSA：hrtimer：修復由 hrtimer_cancel 造成的停止 (Takashi Iwai) [Orabug：28058229] (CVE-2016-2549)

  - ALSA：timer：強化從屬計時器清單處理 (Takashi Iwai) [Orabug：28058229] (CVE-2016-2547) (CVE-2016-2548)

  - ALSA：timer：修復 active_list 的雙重解除連結 (Takashi Iwai) [Orabug：28058229] (CVE-2016-2545)

  - ALSA：seq：修復 remove_events ioctl 時缺少的空檢查 (Takashi Iwai) [Orabug：28058229] (CVE-2016-2543)

  - ALSA：seq：修復計時器設定與關閉時的爭用 (Takashi Iwai) [Orabug：28058229] (CVE-2016-2544)

  - ALSA：usb-audio：避免兩次釋放 umidi 物件 (Andrey Konovalov) [Orabug：28058229] (CVE-2016-2384)

  - perf/hwbp：簡化 perf-hwbp 程式碼，修復文件 (Linus Torvalds) [Orabug：27947608] (CVE-2018-1000199)

  - 還原「perf/hwbp：簡化 perf-hwbp 程式碼，修復文件」(Brian Maly) [Orabug：27947608]

遠端 Ubuntu 14.04 LTS 主機上安裝的一個套件受到 USN-3754-1 公告中所提及的多個弱點影響。

  在 4.9.8 版之前的 Linux 核心中，fs / ext4 / super.c 的 ext4_fill_super 函式未正確驗證中繼區塊群組，進而允許實際位置靠近的攻擊者透過以下方式引致拒絕服務：(超出邊界讀取和系統當機) 特製的 ext4 影像。(CVE-2016-10208)

  - 在 Linux 核心 4.12 之前版本中，drivers/acpi/acpica/nsutils.c 的 acpi_ns_terminate() 函式未排清運算元快取並會造成核心堆疊轉儲存，這讓本機使用者可以透過特製的 ACPI 表格，從核心記憶體取得敏感資訊並繞過 KASLR 保護機制 (在 4.9 及更早版本的核心中)。(CVE-2017-11472)

  在 Linux 核心 3.2 及之前版本的 arch/x86/kernel/acpi/boot.c 中，mp_override_legacy_irq() 函式內的緩衝區溢位可讓本機使用者透過特製的 ACPI 表格取得權限。(CVE-2017-11473)

  - 在 4.13.4 之前的 Linux 核心中，drivers/scsi/sg.c 的 sg_ioctl() 函式可讓本機使用者透過對「/dev/sg0」的 SG_GET_REQUEST_TABLE ioctl 呼叫，從未初始化的核心堆積記憶體位置取得敏感資訊。(CVE-2017-14991)

  在 4.13.6 版之前的 Linux 核心中，「net/packet/af_packet.c」中的 fanout_add() 允許本機使用者透過會觸發 packet_fanout 資料結構不當處理的特製系統呼叫來取得權限，這是因為發生了會導致釋放後使用錯誤的爭用情形 (與 fanout_add 和 packet_do_bind 有關)；此弱點不同於 CVE-2017-6346。(CVE-2017-15649)

  - 在 4.13.6 之前的 Linux 核心中，drivers/uwb/uwbd.c 可讓本機使用者透過特製的 USB 裝置，引致拒絕服務 (一般保護錯誤和系統當機)，或可能造成其他不明影響。(CVE-2017-16526)

  在 Linux 核心 4.13.8 之前版本中，sound/usb/mixer.c 讓本機使用者可以透過特製的 USB 裝置，引致拒絕服務 (snd_usb_mixer_interrupt 釋放後使用和系統當機)，或可能造成其他不明影響。(CVE-2017-16527)

  - 在 Linux 核心 4.13.6 之前版本中，sound/usb/card.c 中的 snd_usb_create_streams 函式可讓本機使用者透過特製的 USB 裝置，造成拒絕服務 (超出邊界讀取和系統當機)，或可能造成其他不明影響。(CVE-2017-16529)

  - 在 4.13.6 之前的 Linux 核心中，drivers/usb/core/config.c 可讓本機使用者透過特製的 USB 裝置，引致拒絕服務 (超出邊界讀取和系統當機)，或可能造成其他不明影響；這其實與 USB_DT_INTERFACE_ASSOCIATION 描述符號有關。(CVE-2017-16531)

  - 在 Linux 核心 4.13.11 及之前版本中，drivers/usb/misc/usbtest.c 的 get_endpoints 函式可讓本機使用者透過特製的 USB 裝置，引致拒絕服務 (NULL 指標解除參照和系統當機)，或可能造成其他不明影響。(CVE-2017-16532)

  - 在 4.13.8 之前的 Linux 核心中，drivers/hid/usbhid/hid-core.c 中的 usbhid_parse 函式可讓本機使用者透過特製的 USB 裝置，引致拒絕服務 (超出邊界讀取和系統當機)，或可能造成其他不明影響。(CVE-2017-16533)

  - 在 Linux 核心 4.13.10 之前版本中，drivers/usb/core/config.c 中的 usb_get_bos_descriptor 函式可讓本機使用者透過特製的 USB 裝置，引致拒絕服務 (超出邊界讀取和系統當機)，或可能造成其他不明影響。(CVE-2017-16535)

  - 在 Linux 核心 4.13.11 及之前版本中，drivers/media/usb/cx231xx/cx231xx-cards.c 中的 cx231xx_usb_probe 函式可讓本機使用者透過特製的 USB 裝置，引致拒絕服務 (NULL 指標解除參照和系統當機)，或可能造成其他不明影響。(CVE-2017-16536)

  - 在 Linux 核心 4.13.11 及之前版本中，drivers/media/rc/imon.c 中的 imon_probe 函式可讓本機使用者透過特製的 USB 裝置，引致拒絕服務 (NULL 指標解除參照和系統當機)，或可能造成其他不明影響。(CVE-2017-16537)

  - 在 4.13.11 及之前版本的 Linux 核心中，drivers/media/usb/dvb-usb-v2/lmedm04.c 允許本機使用者透過特製的 USB 裝置，引致拒絕服務 (一般保護錯誤和系統當機) 或可能造成其他不明影響，這其實與遺漏的熱啟動檢查和錯誤的附加定時有關 (dm04_lme2510_frontend_attach 與 dm04_lme2510_tuner)。(CVE-2017-16538)

  - 在 Linux 核心 4.13.11 之前版本中，drivers/input/tablet/gtco.c 中的 parse_hid_report_descriptor 函式可讓本機使用者透過特製的 USB 裝置，引致拒絕服務 (超出邊界讀取和系統當機)，或可能造成其他不明影響。(CVE-2017-16643)

  - 在 Linux 核心 4.13.11 及之前版本中，drivers/media/usb/hdpvr/hdpvr-core.c 中的 hdpvr_probe 函式可允許本機使用者透過建構的 USB 裝置造成拒絕服務 (不當錯誤處理和系統當機)，或可能造成其他不明影響。(CVE-2017-16644)

  - 在 Linux 核心 4.13.11 及之前版本中，drivers/input/misc/ims-pcu.c 中的 ims_pcu_get_cdc_union_desc 函式可讓本機使用者透過特製的 USB 裝置，造成拒絕服務 (ims_pcu_parse_cdc_data 超出邊界讀取和系統當機)，或可能造成其他不明影響。(CVE-2017-16645)

  - 在 Linux 核心 4.13.11 及之前版本中，drivers/net/usb/qmi_wwan.c 中的 qmi_wwan_bind 函式可讓本機使用者透過特製的 USB 裝置，引致拒絕服務 (除以零錯誤和系統當機)，或可能造成其他不明影響。(CVE-2017-16650)

  - 在 Linux 核心 4.14.8 之前版本和 4.4.114 版中，vhci_hcd 驅動程式允許本機攻擊者洩漏核心記憶體位址。如要成功利用此弱點，需要透過 IP 附加 USB 裝置。
    (CVE-2017-16911)

  - 在 Linux 核心 4.14.8 之前版本、4.9.71 和 4.4.114 版中，get_pipe() 函式 (drivers/usb/usbip/stub_rx.c) 允許攻擊者透過特製的 USB over IP 封包來造成拒絕服務 (超出邊界讀取)。(CVE-2017-16912)

  - 在 Linux 核心 4.14.8 之前版本、4.9.71 和 4.4.114 版中，stub_recv_cmd_submit() 函式 (drivers/usb/usbip/stub_rx.c) 在處理 CMD_SUBMIT 封包時，允許攻擊者透過特製的 USB over IP 封包來造成拒絕服務 (任意記憶體分配)。(CVE-2017-16913)

  - 在 Linux 核心 4.14.8 之前版本、4.9.71、4.1.49 和 4.4.107 版中，stub_send_ret_submit() 函式 (drivers/usb/usbip/stub_tx.c) 允許攻擊者透過特製的 USB over IP 封包來造成拒絕服務 (NULL 指標解除參照)。(CVE-2017-16914)

  在 4.14.5 Linux 核心中，USB 核心子系統中「drivers/usb/core/config.c」的 usb_destroy_configuration() 函式未先考量組態和介面的最大數，便嘗試釋出資源，這會允許本機使用者透過特製 USB 裝置，引致拒絕服務（超出邊界存取）或可能造成其他不明影響。(CVE-2017-17558)

  - 在 Linux 核心 4.11 之前版本中，kernel/events/core.c 的 perf_cpu_time_max_percent_handler 函式允許本機使用者透過大值造成拒絕服務 (整數溢位)，或可能造成其他不明影響，錯誤的 sample-rate 計算結果即為一例。(CVE-2017-18255)

  - 在 Linux 4.13.5 及之前版本中，本機使用者可透過 keyctl 命令為其他使用者建立 keyring，設定不需要的預設值或造成拒絕服務。(CVE-2017-18270)

  - 在 4.9.5 之前的 Linux 核心中，arch/x86/kvm/emulate.c 的 load_segment_descriptor 實作不會正確模擬 MOV SS, NULL 選取器指令，進而允許來賓 OS 使用者透過特製應用程式引致拒絕服務 (來賓 OS 當機) 或取得來賓 OS 權限。(CVE-2017-2583)

  - 在 4.9.3 及之前版本的 Linux 核心中，arch/x86/kvm/emulate.c 允許本機使用者透過利用 fxrstor、fxsave、sgdt 和 sidt 指令模擬的特製應用程式，來從核心記憶體取得敏感資訊，或造成拒絕服務 (釋放後使用)。(CVE-2017-2584)

  - 在 4.10.8 及之前版本的 Linux 核心中，net/ipv4/ping.c 的 ping_unhash 函式取得特定鎖定為時已晚，因而無法確保中斷連線函式呼叫的安全，進而允許本機使用者利用通訊端系統呼叫中 IPPROTO_ICMP 的通訊協定值存取權，引致拒絕服務 (錯誤)。(CVE-2017-2671)

  - 在 4.9.5 版之前的 Linux 核心中，drivers/usb/serial/kl5kusb105.c 的 klsi_105_get_line_state 函式會在無法讀取行狀態時，將未初始化的堆積記憶體內容放入記錄項目，進而允許本機使用者透過讀取記錄。(CVE-2017-5549)

  在 Linux 核心中，net/ipv6/ip6_gre.c 的 ip6gre_err 函式允許遠端攻擊者透過涉及 IPv6 封包中 GRE 旗標的向量造成不明影響，進而觸發超出邊界存取。(CVE-2017-5897)

  - 在 4.9.13 之前的 Linux 核心中，LLC 子系統並未確保必要情況下存在特定解構函式，進而允許本機使用者透過特製的系統呼叫，引致拒絕服務 (BUG_ON) 或可能造成其他不明影響。(CVE-2017-6345)

  - 在 4.9.13 之前的 Linux 核心中，net/irda/irqueue.c 的 hashbin_delete 函式未正確管理鎖定放置，進而允許本機使用者透過 IrDA 裝置上的特製作業，造成拒絕服務 (鎖死)。(CVE-2017-6348)

  模擬系統呼叫指示時，4.12 之前的 Linux 核心的 KVM 模組在 EFLAGS 中處理陷阱旗標 (TF) 的方式中發現一個缺陷，這導致客體堆疊中發生除錯例外狀況 (#DB)。客體中的使用者/處理程序可利用此缺陷提升其在客體內的權限。Linux 客體不受此弱點影響。(CVE-2017-7518)

  - 在 4.10.11 之前的 Linux 核心中，nfsd 子系統的 NFSv2/NFSv3 伺服器允許遠端攻擊者透過長 RPC 回覆，引致拒絕服務 (系統當機)；此問題與 net/sunrpc/svc.c、fs/nfsd/nfs3xdr.c 和 fs/nfsd/nfsxdr.c 相關。(CVE-2017-7645)

  在 4.11.5 版及之前版本的 Linux 核心中，drivers/media/pci/saa7164/saa7164-bus.c 中的 saa7164_bus_get 函式可讓本機使用者透過變更特定的序號值來造成拒絕服務 (超出邊界陣列存取)，或可能造成其他不明影響，亦即「雙重擷取」弱點。
    (CVE-2017-8831)

  - 在 Linux 核心 4.11.7 及其之前版本中，sound/isa/msnd/msnd_pinnacle.c 中的 snd_msnd_interrupt 函式允許本機使用者透過在核心兩次讀取的訊息佇列 head 指標值之間變更此值，來造成拒絕服務 (越界存取) 或可能造成其他不明影響 ，即「雙重擷取」弱點。(CVE-2017-9984) 

  - 在 Linux 核心 4.11.7 及其之前版本中，sound/isa/msnd/msnd_midi.c 中的 snd_msndmidi_input_read 函式允許本機使用者透過在核心兩次讀取的訊息佇列 head 指標值之間變更此值，來造成拒絕服務 (越界存取) 或可能造成其他不明影響 ，即「雙重擷取」弱點。(CVE-2017-9985) 

  - Linux 核心 3.18 至 4.16 版本不會使用 dxfer_direction=SG_DXFER_FROM_DEV 和空位元 cmdp 正確處理 /dev/sg0 上的 SG_IO ioctl。這可導致最多將 1000 個核心堆積頁面複製到使用者空間。此問題已在 https://github.com/torvalds/linux/commit/a45b599ad808c3c982fdcdc12b0b8611c2f92824 上游修正。此問題的範圍有限，因為使用者通常沒有存取 SCSI 裝置的權限。反之，例如 Nero 使用者手冊建議執行 `chmod o+r+w /dev/sg*`，以使裝置可供存取。注意：第三方對此報告的相關性存有疑慮，指出攻擊者必須具備 CAP_SYS_ADMIN 和 CAP_SYS_RAWIO 功能才能利用此問題，而這基本不可能。(CVE-2018-1000204)

  - 在 4.16 之前的 Linux 核心中，drivers/scsi/libsas/sas_scsi_host.c 允許本機使用者藉由觸發特定失敗情形來導致拒絕服務 (ata qc 洩漏)。注意：第三方對此報告的相關性存有爭議，因為只有在靠近 SAS Host Bus Adapter 纜線的情況下，實際位置靠近的攻擊者才會遭遇失敗。(CVE-2018-10021)

  - 在 4.13 之前的 Linux 核心中，當使用不明架構和編譯器時，kernel/wait.c 中的 kernel_wait4 函式可能會允許本機使用者觸發嘗試使用 -INT_MIN 值，進而引致拒絕服務。(CVE-2018-10087)

  - 在 4.13 之前的 Linux 核心中，當使用不明架構和編譯器時，kernel/wait.c 中的 kernel_wait4 函式可能會允許本機使用者透過使用 -INT_MIN 引數，進而引致拒絕服務。(CVE-2018-10124)

  - 在 Linux 核心 4.16.3 及之前版本中，fs/xfs/libxfs/xfs_bmap.c 的 xfs_bmap_extents_to_btree 函式允許本機使用者透過特製的 xfs 影像，造成拒絕服務 (xfs_bmapi_write NULL 指標解除參照) 。(CVE-2018-10323)

  在 Linux 核心 4.12.9 的 mm/mempolicy.c 中，do_get_mempolicy() 函式可讓本機使用者透過特製的系統呼叫，命中釋放後使用錯誤，因此造成拒絕服務 (DoS) 或者可能造成其他不明影響。(CVE-2018-10675)

  - Linux 核心 ext4 檔案系統在特製的 ext4 檔案系統影像上作業時，容易受到 ext4_ext_drop_refs() 函式中的超出邊界存取影響。(CVE-2018-10877)

  在 Linux 核心的 ext4 檔案系統中發現一個缺陷。本機使用者可藉由掛接特製的 ext4 檔案系統映像並在該系統上操作，造成 ext4_get_group_info 函式中發生超出邊界寫入、拒絕服務和系統當機。(CVE-2018-10881)

  在 4.15.15 及更早版本的 Linux 核心中，fs/ext4/inode.c 的 ext4_iget 函式會以不當方式處理含 zero i_links_count 的 Root 目錄，這允許攻擊者透過特製 ext4 影像引致拒絕服務 (ext4_process_freed_data NULL 指標解除參照和 OOPS)。(CVE-2018-1092)

  - 在 Linux 核心 4.15.15 及之前版本中，fs/ext4/balloc.c 的 ext4_valid_block_bitmap 函式可以讓攻擊者透過特製的 ext4 影像引致拒絕服務 (超出邊界讀取和系統當機)，其原因在於 balloc.c 和 ialloc 不會驗證點陣圖區塊編號。(CVE-2018-1093)

  - 在 4.16.6 之前的 Linux 核心中，drivers/cdrom/cdrom.c 的 cdrom_ioctl_media_changed 函式允許本機攻擊者在 CDROM 驅動程式 CDROM_MEDIA_CHANGED ioctl 中使用錯誤的邊界檢查，藉此讀取核心記憶體。(CVE-2018-10940)

  - 在 Linux 核心 4.17.1 及其之前版本中，在 fs/jfs/xattr.c 的 ea_get 函式中， 如果針對相同檔案呼叫兩次具有兩個不同延伸屬性名稱的 setxattr，即可觸發 JFS 中的記憶體損毀錯誤。能夠建立檔案並執行程式的無權限使用者可觸發此弱點。kmalloc 呼叫不正確，進而導致 jfs_xattr 中發生 slab 超出邊界問題。
    (CVE-2018-12233)

  - 在 Linux 核心 4.17.3 及之前版本的 fs/xfs/libxfs/xfs_attr_leaf.c 中發現一個問題。使用 NULL bp 呼叫 xfs_da_shrink_inode() 之後，損毀的 xfs 影像可能會發生 OOPS。(CVE-2018-13094)

  - 在 Linux 核心 3.16 及之前版本中，fs/inode.c 的 inode_init_owner 函式邏輯中有一個弱點，當目錄是 SGID 且隸屬於特定群組，並可由非此群組成員的使用者寫入時，本機使用者可藉此弱點建立具有非預定群組所有權的檔案。然後，非成員可觸發建立群組擁有權為該群組的純檔案。預定行為是此非成員可觸發建立群組擁有權為該群組的目錄 (而非純檔案)。非成員可藉由將純檔案設為可執行檔和 SGID 來提升權限。(CVE-2018-13405)

  - 在 Linux 核心 4.17.4 之前版本中，drivers/video/fbdev/uvesafb.c 中的 uvesafb_setcmap 函式存在整數溢位弱點，因為未使用 kmalloc_array，這讓本機攻擊者能夠造成核心損毀，或可能提升權限。(CVE-2018-13406)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3696-1 advisory.

  - The acpi_ns_evaluate() function in drivers/acpi/acpica/nseval.c in the Linux kernel through 4.12.9 does     not flush the operand cache and causes a kernel stack dump, which allows local users to obtain sensitive     information from kernel memory and bypass the KASLR protection mechanism (in the kernel through 4.9) via a     crafted ACPI table. (CVE-2017-13695)

  - The perf_cpu_time_max_percent_handler function in kernel/events/core.c in the Linux kernel before 4.11     allows local users to cause a denial of service (integer overflow) or possibly have unspecified other     impact via a large value, as demonstrated by an incorrect sample-rate calculation. (CVE-2017-18255)

  - The __get_data_block function in fs/f2fs/data.c in the Linux kernel before 4.11 allows local users to     cause a denial of service (integer overflow and loop) via crafted use of the open and fallocate system     calls with an FS_IOC_FIEMAP ioctl. (CVE-2017-18257)

  - Linux Kernel version 3.18 to 4.16 incorrectly handles an SG_IO ioctl on /dev/sg0 with     dxfer_direction=SG_DXFER_FROM_DEV and an empty 6-byte cmdp. This may lead to copying up to 1000 kernel     heap pages to the userspace. This has been fixed upstream in     https://github.com/torvalds/linux/commit/a45b599ad808c3c982fdcdc12b0b8611c2f92824 already. The problem has     limited scope, as users don't usually have permissions to access SCSI devices. On the other hand, e.g. the     Nero user manual suggests doing `chmod o+r+w /dev/sg*` to make the devices accessible. NOTE: third parties     dispute the relevance of this report, noting that the requirement for an attacker to have both the     CAP_SYS_ADMIN and CAP_SYS_RAWIO capabilities makes it virtually impossible to exploit. (CVE-2018-1000204)

  - drivers/scsi/libsas/sas_scsi_host.c in the Linux kernel before 4.16 allows local users to cause a denial     of service (ata qc leak) by triggering certain failure conditions. NOTE: a third party disputes the     relevance of this report because the failure can only occur for physically proximate attackers who unplug     SAS Host Bus Adapter cables (CVE-2018-10021)

  - The kernel_wait4 function in kernel/exit.c in the Linux kernel before 4.13, when an unspecified     architecture and compiler is used, might allow local users to cause a denial of service by triggering an     attempted use of the -INT_MIN value. (CVE-2018-10087)

  - The kill_something_info function in kernel/signal.c in the Linux kernel before 4.13, when an unspecified     architecture and compiler is used, might allow local users to cause a denial of service via an INT_MIN     argument. (CVE-2018-10124)

  - System software utilizing Lazy FP state restore technique on systems using Intel Core-based     microprocessors may potentially allow a local process to infer data from another process through a     speculative execution side channel. (CVE-2018-3665)

  - In the Linux Kernel before version 4.16.11, 4.14.43, 4.9.102, and 4.4.133, multiple race condition errors     when handling probe, disconnect, and rebind operations can be exploited to trigger a use-after-free     condition or a NULL pointer dereference by sending multiple USB over IP packets. (CVE-2018-5814)

  - An issue was discovered in the fd_locked_ioctl function in drivers/block/floppy.c in the Linux kernel     through 4.15.7. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM     ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the     location of kernel code and data and bypass kernel security protections such as KASLR. (CVE-2018-7755)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3696-2 advisory.

  - The acpi_ns_evaluate() function in drivers/acpi/acpica/nseval.c in the Linux kernel through 4.12.9 does     not flush the operand cache and causes a kernel stack dump, which allows local users to obtain sensitive     information from kernel memory and bypass the KASLR protection mechanism (in the kernel through 4.9) via a     crafted ACPI table. (CVE-2017-13695)

  - The perf_cpu_time_max_percent_handler function in kernel/events/core.c in the Linux kernel before 4.11     allows local users to cause a denial of service (integer overflow) or possibly have unspecified other     impact via a large value, as demonstrated by an incorrect sample-rate calculation. (CVE-2017-18255)

  - The __get_data_block function in fs/f2fs/data.c in the Linux kernel before 4.11 allows local users to     cause a denial of service (integer overflow and loop) via crafted use of the open and fallocate system     calls with an FS_IOC_FIEMAP ioctl. (CVE-2017-18257)

  - Linux Kernel version 3.18 to 4.16 incorrectly handles an SG_IO ioctl on /dev/sg0 with     dxfer_direction=SG_DXFER_FROM_DEV and an empty 6-byte cmdp. This may lead to copying up to 1000 kernel     heap pages to the userspace. This has been fixed upstream in     https://github.com/torvalds/linux/commit/a45b599ad808c3c982fdcdc12b0b8611c2f92824 already. The problem has     limited scope, as users don't usually have permissions to access SCSI devices. On the other hand, e.g. the     Nero user manual suggests doing `chmod o+r+w /dev/sg*` to make the devices accessible. NOTE: third parties     dispute the relevance of this report, noting that the requirement for an attacker to have both the     CAP_SYS_ADMIN and CAP_SYS_RAWIO capabilities makes it virtually impossible to exploit. (CVE-2018-1000204)

  - drivers/scsi/libsas/sas_scsi_host.c in the Linux kernel before 4.16 allows local users to cause a denial     of service (ata qc leak) by triggering certain failure conditions. NOTE: a third party disputes the     relevance of this report because the failure can only occur for physically proximate attackers who unplug     SAS Host Bus Adapter cables (CVE-2018-10021)

  - The kernel_wait4 function in kernel/exit.c in the Linux kernel before 4.13, when an unspecified     architecture and compiler is used, might allow local users to cause a denial of service by triggering an     attempted use of the -INT_MIN value. (CVE-2018-10087)

  - The kill_something_info function in kernel/signal.c in the Linux kernel before 4.13, when an unspecified     architecture and compiler is used, might allow local users to cause a denial of service via an INT_MIN     argument. (CVE-2018-10124)

  - System software utilizing Lazy FP state restore technique on systems using Intel Core-based     microprocessors may potentially allow a local process to infer data from another process through a     speculative execution side channel. (CVE-2018-3665)

  - In the Linux Kernel before version 4.16.11, 4.14.43, 4.9.102, and 4.4.133, multiple race condition errors     when handling probe, disconnect, and rebind operations can be exploited to trigger a use-after-free     condition or a NULL pointer dereference by sending multiple USB over IP packets. (CVE-2018-5814)

  - An issue was discovered in the fd_locked_ioctl function in drivers/block/floppy.c in the Linux kernel     through 4.15.7. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM     ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the     location of kernel code and data and bypass kernel security protections such as KASLR. (CVE-2018-7755)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2018-4161 advisory.

  - Incorrect error handling in the set_mempolicy and mbind compat syscalls in mm/mempolicy.c in the Linux     kernel through 4.10.9 allows local users to obtain sensitive information from uninitialized stack data by     triggering failure of a certain bitmap operation. (CVE-2017-7616)

  - The tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c in the Linux kernel before 4.11, and 4.9.x     before 4.9.36, allows remote attackers to cause a denial of service (use-after-free and memory corruption)     or possibly have unspecified other impact by leveraging the presence of xt_TCPMSS in an iptables action.
    (CVE-2017-18017)

  - In the Linux Kernel before version 4.15.8, 4.14.25, 4.9.87, 4.4.121, 4.1.51, and 3.2.102, an error in the
    _sctp_make_chunk() function (net/sctp/sm_make_chunk.c) when handling SCTP packets length can be     exploited to cause a kernel crash. (CVE-2018-5803)

  - Linux kernel before version 4.16-rc7 is vulnerable to a null pointer dereference in dccp_write_xmit()     function in net/dccp/output.c in that allows a local user to cause a denial of service by a number of     certain crafted system calls. (CVE-2018-1130)

  - net/xfrm/xfrm_policy.c in the Linux kernel through 4.12.3, when CONFIG_XFRM_MIGRATE is enabled, does not     ensure that the dir value of xfrm_userpolicy_id is XFRM_POLICY_MAX or less, which allows local users to     cause a denial of service (out-of-bounds access) or possibly have unspecified other impact via an     XFRM_MSG_MIGRATE xfrm Netlink message. (CVE-2017-11600)

  - The kernel_wait4 function in kernel/exit.c in the Linux kernel before 4.13, when an unspecified     architecture and compiler is used, might allow local users to cause a denial of service by triggering an     attempted use of the -INT_MIN value. (CVE-2018-10087)

  - The kill_something_info function in kernel/signal.c in the Linux kernel before 4.13, when an unspecified     architecture and compiler is used, might allow local users to cause a denial of service via an INT_MIN     argument. (CVE-2018-10124)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote OracleVM system is missing necessary patches to address critical security updates :

  - dm: fix race between dm_get_from_kobject and
    __dm_destroy (Hou Tao) (CVE-2017-18203)

  - drm: udl: Properly check framebuffer mmap offsets (Greg     Kroah-Hartman) [Orabug: 27986407] (CVE-2018-8781)

  - kernel/exit.c: avoid undefined behaviour when calling     wait4 wait4(-2147483648, 0x20, 0, 0xdd0000) triggers:
    UBSAN: Undefined behaviour in kernel/exit.c:1651:9     (mridula shastry) [Orabug: 27875488] (CVE-2018-10087)

  - kernel/signal.c: avoid undefined behaviour in     kill_something_info When running kill(72057458746458112,     0) in userspace I hit the following issue. (mridula     shastry) (CVE-2018-10124)

  - bluetooth: Validate socket address length in     sco_sock_bind. (mlevatic) [Orabug: 28130293]     (CVE-2015-8575)

  - dccp: check sk for closed state in dccp_sendmsg (Alexey     Kodanev) [Orabug: 28220402] (CVE-2017-8824)     (CVE-2018-1130)

  - sctp: verify size of a new chunk in _sctp_make_chunk     (Alexey Kodanev) [Orabug: 28240075] (CVE-2018-5803)

  - mm/mempolicy.c: fix error handling in set_mempolicy and     mbind. (Chris Salls) [Orabug: 28242478] (CVE-2017-7616)

  - xfrm: policy: check policy direction value (Vladis     Dronov) [Orabug: 28264121] (CVE-2017-11600)     (CVE-2017-11600)

  - x86/fpu: Make eager FPU default (Mihai Carabas) [Orabug:
    28156176] (CVE-2018-3665)

  - KVM: Fix stack-out-of-bounds read in write_mmio (Wanpeng     Li) [Orabug: 27951287] (CVE-2017-17741) (CVE-2017-17741)

  - xfs: set format back to extents if     xfs_bmap_extents_to_btree (Eric Sandeen) [Orabug:
    27989498] (CVE-2018-10323)

  - Bluetooth: Prevent stack info leak from the EFS element.
    (Ben Seri) [Orabug: 28030520] (CVE-2017-1000410)     (CVE-2017-1000410)

  - ALSA: hrtimer: Fix stall by hrtimer_cancel (Takashi     Iwai) [Orabug: 28058229] (CVE-2016-2549)

  - ALSA: timer: Harden slave timer list handling (Takashi     Iwai) [Orabug: 28058229] (CVE-2016-2547) (CVE-2016-2548)

  - ALSA: timer: Fix double unlink of active_list (Takashi     Iwai) [Orabug: 28058229] (CVE-2016-2545)

  - ALSA: seq: Fix missing NULL check at remove_events ioctl     (Takashi Iwai) [Orabug: 28058229] (CVE-2016-2543)

  - ALSA: seq: Fix race at timer setup and close (Takashi     Iwai) [Orabug: 28058229] (CVE-2016-2544)

  - ALSA: usb-audio: avoid freeing umidi object twice     (Andrey Konovalov) [Orabug: 28058229] (CVE-2016-2384)

  - perf/hwbp: Simplify the perf-hwbp code, fix     documentation (Linus Torvalds) [Orabug: 27947608]     (CVE-2018-1000199)

  - Revert 'perf/hwbp: Simplify the perf-hwbp code, fix     documentation' (Brian Maly) [Orabug: 27947608]

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3754-1 advisory.

  - The ext4_fill_super function in fs/ext4/super.c in the Linux kernel through 4.9.8 does not properly     validate meta block groups, which allows physically proximate attackers to cause a denial of service (out-     of-bounds read and system crash) via a crafted ext4 image. (CVE-2016-10208)

  - The acpi_ns_terminate() function in drivers/acpi/acpica/nsutils.c in the Linux kernel before 4.12 does not     flush the operand cache and causes a kernel stack dump, which allows local users to obtain sensitive     information from kernel memory and bypass the KASLR protection mechanism (in the kernel through 4.9) via a     crafted ACPI table. (CVE-2017-11472)

  - Buffer overflow in the mp_override_legacy_irq() function in arch/x86/kernel/acpi/boot.c in the Linux     kernel through 3.2 allows local users to gain privileges via a crafted ACPI table. (CVE-2017-11473)

  - The sg_ioctl function in drivers/scsi/sg.c in the Linux kernel before 4.13.4 allows local users to obtain     sensitive information from uninitialized kernel heap-memory locations via an SG_GET_REQUEST_TABLE ioctl     call for /dev/sg0. (CVE-2017-14991)

  - net/packet/af_packet.c in the Linux kernel before 4.13.6 allows local users to gain privileges via crafted     system calls that trigger mishandling of packet_fanout data structures, because of a race condition     (involving fanout_add and packet_do_bind) that leads to a use-after-free, a different vulnerability than     CVE-2017-6346. (CVE-2017-15649)

  - drivers/uwb/uwbd.c in the Linux kernel before 4.13.6 allows local users to cause a denial of service     (general protection fault and system crash) or possibly have unspecified other impact via a crafted USB     device. (CVE-2017-16526)

  - sound/usb/mixer.c in the Linux kernel before 4.13.8 allows local users to cause a denial of service     (snd_usb_mixer_interrupt use-after-free and system crash) or possibly have unspecified other impact via a     crafted USB device. (CVE-2017-16527)

  - The snd_usb_create_streams function in sound/usb/card.c in the Linux kernel before 4.13.6 allows local     users to cause a denial of service (out-of-bounds read and system crash) or possibly have unspecified     other impact via a crafted USB device. (CVE-2017-16529)

  - drivers/usb/core/config.c in the Linux kernel before 4.13.6 allows local users to cause a denial of     service (out-of-bounds read and system crash) or possibly have unspecified other impact via a crafted USB     device, related to the USB_DT_INTERFACE_ASSOCIATION descriptor. (CVE-2017-16531)

  - The get_endpoints function in drivers/usb/misc/usbtest.c in the Linux kernel through 4.13.11 allows local     users to cause a denial of service (NULL pointer dereference and system crash) or possibly have     unspecified other impact via a crafted USB device. (CVE-2017-16532)

  - The usbhid_parse function in drivers/hid/usbhid/hid-core.c in the Linux kernel before 4.13.8 allows local     users to cause a denial of service (out-of-bounds read and system crash) or possibly have unspecified     other impact via a crafted USB device. (CVE-2017-16533)

  - The usb_get_bos_descriptor function in drivers/usb/core/config.c in the Linux kernel before 4.13.10 allows     local users to cause a denial of service (out-of-bounds read and system crash) or possibly have     unspecified other impact via a crafted USB device. (CVE-2017-16535)

  - The cx231xx_usb_probe function in drivers/media/usb/cx231xx/cx231xx-cards.c in the Linux kernel through     4.13.11 allows local users to cause a denial of service (NULL pointer dereference and system crash) or     possibly have unspecified other impact via a crafted USB device. (CVE-2017-16536)

  - The imon_probe function in drivers/media/rc/imon.c in the Linux kernel through 4.13.11 allows local users     to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified     other impact via a crafted USB device. (CVE-2017-16537)

  - drivers/media/usb/dvb-usb-v2/lmedm04.c in the Linux kernel through 4.13.11 allows local users to cause a     denial of service (general protection fault and system crash) or possibly have unspecified other impact     via a crafted USB device, related to a missing warm-start check and incorrect attach timing     (dm04_lme2510_frontend_attach versus dm04_lme2510_tuner). (CVE-2017-16538)

  - The parse_hid_report_descriptor function in drivers/input/tablet/gtco.c in the Linux kernel before 4.13.11     allows local users to cause a denial of service (out-of-bounds read and system crash) or possibly have     unspecified other impact via a crafted USB device. (CVE-2017-16643)

  - The hdpvr_probe function in drivers/media/usb/hdpvr/hdpvr-core.c in the Linux kernel through 4.13.11     allows local users to cause a denial of service (improper error handling and system crash) or possibly     have unspecified other impact via a crafted USB device. (CVE-2017-16644)

  - The ims_pcu_get_cdc_union_desc function in drivers/input/misc/ims-pcu.c in the Linux kernel through     4.13.11 allows local users to cause a denial of service (ims_pcu_parse_cdc_data out-of-bounds read and     system crash) or possibly have unspecified other impact via a crafted USB device. (CVE-2017-16645)

  - The qmi_wwan_bind function in drivers/net/usb/qmi_wwan.c in the Linux kernel through 4.13.11 allows local     users to cause a denial of service (divide-by-zero error and system crash) or possibly have unspecified     other impact via a crafted USB device. (CVE-2017-16650)

  - The vhci_hcd driver in the Linux Kernel before version 4.14.8 and 4.4.114 allows allows local attackers to     disclose kernel memory addresses. Successful exploitation requires that a USB device is attached over IP.
    (CVE-2017-16911)

  - The get_pipe() function (drivers/usb/usbip/stub_rx.c) in the Linux Kernel before version 4.14.8, 4.9.71,     and 4.4.114 allows attackers to cause a denial of service (out-of-bounds read) via a specially crafted USB     over IP packet. (CVE-2017-16912)

  - The stub_recv_cmd_submit() function (drivers/usb/usbip/stub_rx.c) in the Linux Kernel before version     4.14.8, 4.9.71, and 4.4.114 when handling CMD_SUBMIT packets allows attackers to cause a denial of service     (arbitrary memory allocation) via a specially crafted USB over IP packet. (CVE-2017-16913)

  - The stub_send_ret_submit() function (drivers/usb/usbip/stub_tx.c) in the Linux Kernel before version     4.14.8, 4.9.71, 4.1.49, and 4.4.107 allows attackers to cause a denial of service (NULL pointer     dereference) via a specially crafted USB over IP packet. (CVE-2017-16914)

  - The usb_destroy_configuration function in drivers/usb/core/config.c in the USB core subsystem in the Linux     kernel through 4.14.5 does not consider the maximum number of configurations and interfaces before     attempting to release resources, which allows local users to cause a denial of service (out-of-bounds     write access) or possibly have unspecified other impact via a crafted USB device. (CVE-2017-17558)

  - The perf_cpu_time_max_percent_handler function in kernel/events/core.c in the Linux kernel before 4.11     allows local users to cause a denial of service (integer overflow) or possibly have unspecified other     impact via a large value, as demonstrated by an incorrect sample-rate calculation. (CVE-2017-18255)

  - In the Linux kernel before 4.13.5, a local user could create keyrings for other users via keyctl commands,     setting unwanted defaults or causing a denial of service. (CVE-2017-18270)

  - The load_segment_descriptor implementation in arch/x86/kvm/emulate.c in the Linux kernel before 4.9.5     improperly emulates a MOV SS, NULL selector instruction, which allows guest OS users to cause a denial     of service (guest OS crash) or gain guest OS privileges via a crafted application. (CVE-2017-2583)

  - arch/x86/kvm/emulate.c in the Linux kernel through 4.9.3 allows local users to obtain sensitive     information from kernel memory or cause a denial of service (use-after-free) via a crafted application     that leverages instruction emulation for fxrstor, fxsave, sgdt, and sidt. (CVE-2017-2584)

  - The ping_unhash function in net/ipv4/ping.c in the Linux kernel through 4.10.8 is too late in obtaining a     certain lock and consequently cannot ensure that disconnect function calls are safe, which allows local     users to cause a denial of service (panic) by leveraging access to the protocol value of IPPROTO_ICMP in a     socket system call. (CVE-2017-2671)

  - The klsi_105_get_line_state function in drivers/usb/serial/kl5kusb105.c in the Linux kernel before 4.9.5     places uninitialized heap-memory contents into a log entry upon a failure to read the line status, which     allows local users to obtain sensitive information by reading the log. (CVE-2017-5549)

  - The ip6gre_err function in net/ipv6/ip6_gre.c in the Linux kernel allows remote attackers to have     unspecified impact via vectors involving GRE flags in an IPv6 packet, which trigger an out-of-bounds     access. (CVE-2017-5897)

  - The LLC subsystem in the Linux kernel before 4.9.13 does not ensure that a certain destructor exists in     required circumstances, which allows local users to cause a denial of service (BUG_ON) or possibly have     unspecified other impact via crafted system calls. (CVE-2017-6345)

  - The hashbin_delete function in net/irda/irqueue.c in the Linux kernel before 4.9.13 improperly manages     lock dropping, which allows local users to cause a denial of service (deadlock) via crafted operations on     IrDA devices. (CVE-2017-6348)

  - A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap     flag(TF) bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exception(#DB)     being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate     their privileges inside the guest. Linux guests are not affected by this. (CVE-2017-7518)

  - The NFSv2/NFSv3 server in the nfsd subsystem in the Linux kernel through 4.10.11 allows remote attackers     to cause a denial of service (system crash) via a long RPC reply, related to net/sunrpc/svc.c,     fs/nfsd/nfs3xdr.c, and fs/nfsd/nfsxdr.c. (CVE-2017-7645)

  - The saa7164_bus_get function in drivers/media/pci/saa7164/saa7164-bus.c in the Linux kernel through 4.11.5     allows local users to cause a denial of service (out-of-bounds array access) or possibly have unspecified     other impact by changing a certain sequence-number value, aka a double fetch vulnerability.
    (CVE-2017-8831)

  - The snd_msnd_interrupt function in sound/isa/msnd/msnd_pinnacle.c in the Linux kernel through 4.11.7     allows local users to cause a denial of service (over-boundary access) or possibly have unspecified other     impact by changing the value of a message queue head pointer between two kernel reads of that value, aka a     double fetch vulnerability. (CVE-2017-9984)

  - The snd_msndmidi_input_read function in sound/isa/msnd/msnd_midi.c in the Linux kernel through 4.11.7     allows local users to cause a denial of service (over-boundary access) or possibly have unspecified other     impact by changing the value of a message queue head pointer between two kernel reads of that value, aka a     double fetch vulnerability. (CVE-2017-9985)

  - Linux Kernel version 3.18 to 4.16 incorrectly handles an SG_IO ioctl on /dev/sg0 with     dxfer_direction=SG_DXFER_FROM_DEV and an empty 6-byte cmdp. This may lead to copying up to 1000 kernel     heap pages to the userspace. This has been fixed upstream in     https://github.com/torvalds/linux/commit/a45b599ad808c3c982fdcdc12b0b8611c2f92824 already. The problem has     limited scope, as users don't usually have permissions to access SCSI devices. On the other hand, e.g. the     Nero user manual suggests doing `chmod o+r+w /dev/sg*` to make the devices accessible. NOTE: third parties     dispute the relevance of this report, noting that the requirement for an attacker to have both the     CAP_SYS_ADMIN and CAP_SYS_RAWIO capabilities makes it virtually impossible to exploit. (CVE-2018-1000204)

  - drivers/scsi/libsas/sas_scsi_host.c in the Linux kernel before 4.16 allows local users to cause a denial     of service (ata qc leak) by triggering certain failure conditions. NOTE: a third party disputes the     relevance of this report because the failure can only occur for physically proximate attackers who unplug     SAS Host Bus Adapter cables (CVE-2018-10021)

  - The kernel_wait4 function in kernel/exit.c in the Linux kernel before 4.13, when an unspecified     architecture and compiler is used, might allow local users to cause a denial of service by triggering an     attempted use of the -INT_MIN value. (CVE-2018-10087)

  - The kill_something_info function in kernel/signal.c in the Linux kernel before 4.13, when an unspecified     architecture and compiler is used, might allow local users to cause a denial of service via an INT_MIN     argument. (CVE-2018-10124)

  - The xfs_bmap_extents_to_btree function in fs/xfs/libxfs/xfs_bmap.c in the Linux kernel through 4.16.3     allows local users to cause a denial of service (xfs_bmapi_write NULL pointer dereference) via a crafted     xfs image. (CVE-2018-10323)

  - The do_get_mempolicy function in mm/mempolicy.c in the Linux kernel before 4.12.9 allows local users to     cause a denial of service (use-after-free) or possibly have unspecified other impact via crafted system     calls. (CVE-2018-10675)

  - Linux kernel ext4 filesystem is vulnerable to an out-of-bound access in the ext4_ext_drop_refs() function     when operating on a crafted ext4 filesystem image. (CVE-2018-10877)

  - A flaw was found in the Linux kernel's ext4 filesystem. A local user can cause an out-of-bound access in     ext4_get_group_info function, a denial of service, and a system crash by mounting and operating on a     crafted ext4 filesystem image. (CVE-2018-10881)

  - The ext4_iget function in fs/ext4/inode.c in the Linux kernel through 4.15.15 mishandles the case of a     root directory with a zero i_links_count, which allows attackers to cause a denial of service     (ext4_process_freed_data NULL pointer dereference and OOPS) via a crafted ext4 image. (CVE-2018-1092)

  - The ext4_valid_block_bitmap function in fs/ext4/balloc.c in the Linux kernel through 4.15.15 allows     attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image     because balloc.c and ialloc.c do not validate bitmap block numbers. (CVE-2018-1093)

  - The cdrom_ioctl_media_changed function in drivers/cdrom/cdrom.c in the Linux kernel before 4.16.6 allows     local attackers to use a incorrect bounds check in the CDROM driver CDROM_MEDIA_CHANGED ioctl to read out     kernel memory. (CVE-2018-10940)

  - In the ea_get function in fs/jfs/xattr.c in the Linux kernel through 4.17.1, a memory corruption bug in     JFS can be triggered by calling setxattr twice with two different extended attribute names on the same     file. This vulnerability can be triggered by an unprivileged user with the ability to create files and     execute programs. A kmalloc call is incorrect, leading to slab-out-of-bounds in jfs_xattr.
    (CVE-2018-12233)

  - An issue was discovered in fs/xfs/libxfs/xfs_attr_leaf.c in the Linux kernel through 4.17.3. An OOPS may     occur for a corrupted xfs image after xfs_da_shrink_inode() is called with a NULL bp. (CVE-2018-13094)

  - The inode_init_owner function in fs/inode.c in the Linux kernel through 3.16 allows local users to create     files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and     is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a     plain file whose group ownership is that group. The intended behavior was that the non-member can trigger     creation of a directory (but not a plain file) whose group ownership is that group. The non-member can     escalate privileges by making the plain file executable and SGID. (CVE-2018-13405)

  - An integer overflow in the uvesafb_setcmap function in drivers/video/fbdev/uvesafb.c in the Linux kernel     before 4.17.4 could result in local attackers being able to crash the kernel or potentially elevate     privileges because kmalloc_array is not used. (CVE-2018-13406)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - A vulnerability was found in the Linux kernel where the     keyctl_set_reqkey_keyring() function leaks the thread     keyring. This allows an unprivileged local user to     exhaust kernel memory and thus cause a     DoS.(CVE-2017-7472)

  - A reference counter leak in Linux kernel in     ipxitf_ioctl function was found which results in a use     after free vulnerability that's triggerable from     unprivileged userspace when IPX interface is     configured.(CVE-2017-7487)

  - A vulnerability was found in the Linux kernel where     filesystems mounted with data=ordered mode may allow an     attacker to read stale data from recently allocated     blocks in new files after a system 'reset' by abusing     ext4 mechanics of delayed allocation.(CVE-2017-7495)

  - A race condition was found in the Linux kernel, present     since v3.14-rc1 through v4.12. The race happens between     threads of inotify_handle_event() and vfs_rename()     while running the rename operation against the same     file. As a result of the race the next slab data or the     slab's free list pointer can be corrupted with     attacker-controlled data, which may lead to the     privilege escalation.(CVE-2017-7533)

  - Kernel memory corruption due to a buffer overflow was     found in brcmf_cfg80211_mgmt_tx() function in Linux     kernels from v3.9-rc1 to v4.13-rc1. The vulnerability     can be triggered by sending a crafted NL80211_CMD_FRAME     packet via netlink. This flaw is unlikely to be     triggered remotely as certain userspace code is needed     for this. An unprivileged local user could use this     flaw to induce kernel memory corruption on the system,     leading to a crash. Due to the nature of the flaw,     privilege escalation cannot be fully ruled out,     although it is unlikely.(CVE-2017-7541)

  - An integer overflow vulnerability in     ip6_find_1stfragopt() function was found. A local     attacker that has privileges (of CAP_NET_RAW) to open     raw socket can cause an infinite loop inside the     ip6_find_1stfragopt() function.(CVE-2017-7542)

  - Incorrect error handling in the set_mempolicy() and     mbind() compat syscalls in 'mm/mempolicy.c' in the     Linux kernel allows local users to obtain sensitive     information from uninitialized stack data by triggering     failure of a certain bitmap operation.(CVE-2017-7616)

  - The NFS2/3 RPC client could send long arguments to the     NFS server. These encoded arguments are stored in an     array of memory pages, and accessed using pointer     variables. Arbitrarily long arguments could make these     pointers point outside the array and cause an     out-of-bounds memory access. A remote user or program     could use this flaw to crash the kernel, resulting in     denial of service.(CVE-2017-7645)

  - The NFSv2 and NFSv3 server implementations in the Linux     kernel through 4.10.13 lacked certain checks for the     end of a buffer. A remote attacker could trigger a     pointer-arithmetic error or possibly cause other     unspecified impacts using crafted requests related to     fs/nfsd/nfs3xdr.c and fs/nfsd/nfsxdr.c.(CVE-2017-7895)

  - It was found that the NFSv4 server in the Linux kernel     did not properly validate layout type when processing     NFSv4 pNFS LAYOUTGET and GETDEVICEINFO operands. A     remote attacker could use this flaw to soft-lockup the     system and thus cause denial of service.(CVE-2017-8797)

  - A use-after-free vulnerability was found in DCCP socket     code affecting the Linux kernel since 2.6.16. This     vulnerability could allow an attacker to their escalate     privileges.(CVE-2017-8824)

  - The inet_csk_clone_lock function in     net/ipv4/inet_connection_sock.c in the Linux kernel     allows attackers to cause a denial of service (double     free) or possibly have unspecified other impact by     leveraging use of the accept system call. An     unprivileged local user could use this flaw to induce     kernel memory corruption on the system, leading to a     crash. Due to the nature of the flaw, privilege     escalation cannot be fully ruled out, although we     believe it is unlikely.(CVE-2017-8890)

  - The edge_bulk_in_callback function in     drivers/usb/serial/io_ti.c in the Linux kernel allows     local users to obtain sensitive information (in the     dmesg ringbuffer and syslog) from uninitialized kernel     memory by using a crafted USB device (posing as an     io_ti USB serial device) to trigger an integer     underflow.(CVE-2017-8924)

  - The IPv6 fragmentation implementation in the Linux     kernel does not consider that the nexthdr field may be     associated with an invalid option, which allows local     users to cause a denial of service (out-of-bounds read     and BUG) or possibly have unspecified other impact via     crafted socket and send system calls. Due to the nature     of the flaw, privilege escalation cannot be fully ruled     out, although we believe it is unlikely.(CVE-2017-9074)

  - The sctp_v6_create_accept_sk function in     net/sctp/ipv6.c in the Linux kernel mishandles     inheritance, which allows local users to cause a denial     of service or possibly have unspecified other impact     via crafted system calls, a related issue to     CVE-2017-8890. An unprivileged local user could use     this flaw to induce kernel memory corruption on the     system, leading to a crash. Due to the nature of the     flaw, privilege escalation cannot be fully ruled out,     although we believe it is unlikely.(CVE-2017-9075)

  - The IPv6 DCCP implementation in the Linux kernel     mishandles inheritance, which allows local users to     cause a denial of service or possibly have unspecified     other impact via crafted system calls, a related issue     to CVE-2017-8890. An unprivileged local user could use     this flaw to induce kernel memory corruption on the     system, leading to a crash. Due to the nature of the     flaw, privilege escalation cannot be fully ruled out,     although we believe it is unlikely.(CVE-2017-9076)

  - The tcp_v6_syn_recv_sock function in     net/ipv6/tcp_ipv6.c in the Linux kernel mishandles     inheritance, which allows local users to cause a denial     of service or possibly have unspecified other impact     via crafted system calls, a related issue to     CVE-2017-8890. An unprivileged local user could use     this flaw to induce kernel memory corruption on the     system, leading to a crash. Due to the nature of the     flaw, privilege escalation cannot be fully ruled out,     although we believe it is unlikely.(CVE-2017-9077)

  - The __ip6_append_data function in net/ipv6/ip6_output.c     in the Linux kernel through 4.11.3 is too late in     checking whether an overwrite of an skb data structure     may occur, which allows local users to cause a denial     of service (system crash) via crafted system     calls.(CVE-2017-9242)

  - The vmw_gb_surface_define_ioctl function (accessible     via DRM_IOCTL_VMW_GB_SURFACE_CREATE) in     drivers/gpu/drm/vmwgfx/vmwgfx_surface.c in the Linux     kernel through 4.11.4 defines a backup_handle variable     but does not give it an initial value. If one attempts     to create a GB surface, with a previously allocated DMA     buffer to be used as a backup buffer, the backup_handle     variable does not get written to and is then later     returned to user space, allowing local users to obtain     sensitive information from uninitialized kernel memory     via a crafted ioctl call.(CVE-2017-9605)

  - In the Linux kernel versions 4.12, 3.10, 2.6, and     possibly earlier, a race condition vulnerability exists     in the sound system allowing for a potential deadlock     and memory corruption due to use-after-free condition     and thus denial of service. Due to the nature of the     flaw, privilege escalation cannot be fully ruled out,     although we believe it is unlikely.(CVE-2018-1000004)

  - The code in the drivers/scsi/libsas/sas_scsi_host.c     file in the Linux kernel allow a physically proximate     attacker to cause a memory leak in the ATA command     queue and, thus, denial of service by triggering     certain failure conditions.(CVE-2018-10021)

  - The kernel_wait4 function in kernel/exit.c in the Linux     kernel, when an unspecified architecture and compiler     is used, might allow local users to cause a denial of     service by triggering an attempted use of the -INT_MIN     value.(CVE-2018-10087)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	名稱	產品	系列	已發布	已更新	嚴重性
112113	Ubuntu 14.04 LTS : Linux カーネル脆弱性 (USN-3754-1)	Nessus	Ubuntu Local Security Checks	2018/8/24	2024/1/9	critical
110896	Ubuntu 16.04 LTS：Linux 核心弱點 (USN-3696-1)	Nessus	Ubuntu Local Security Checks	2018/7/3	2024/1/9	high
110897	Ubuntu 14.04 LTS：Linux 核心 (Xenial HWE) 弱點 (USN-3696-2)	Nessus	Ubuntu Local Security Checks	2018/7/3	2024/1/9	high
110997	Oracle Linux 6 / 7：Unbreakable Enterprise 核心 (ELSA-2018-4161)	Nessus	Oracle Linux Local Security Checks	2018/7/11	2021/9/8	critical
111022	OracleVM 3.3：Unbreakable /等 (OVMSA-2018-0237)	Nessus	OracleVM Local Security Checks	2018/7/12	2019/9/27	high
112113	Ubuntu 14.04 LTS：Linux 核心弱點 (USN-3754-1)	Nessus	Ubuntu Local Security Checks	2018/8/24	2024/1/9	critical
110896	Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-3696-1)	Nessus	Ubuntu Local Security Checks	2018/7/3	2024/1/9	high
110897	Ubuntu 14.04 LTS : Linux kernel (Xenial HWE) vulnerabilities (USN-3696-2)	Nessus	Ubuntu Local Security Checks	2018/7/3	2024/1/9	high
110997	Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4161)	Nessus	Oracle Linux Local Security Checks	2018/7/11	2021/9/8	critical
111022	OracleVM 3.3 : Unbreakable / etc (OVMSA-2018-0237)	Nessus	OracleVM Local Security Checks	2018/7/12	2019/9/27	high
111414	openSUSE Security Update : the Linux Kernel (openSUSE-2018-762) (Spectre)	Nessus	SuSE Local Security Checks	2018/7/30	2023/8/24	high
112113	Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-3754-1)	Nessus	Ubuntu Local Security Checks	2018/8/24	2024/1/9	critical
131845	EulerOS 2.0 SP2 : kernel (EulerOS-SA-2019-2353)	Nessus	Huawei Local Security Checks	2019/12/10	2024/4/5	critical
124827	EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1504)	Nessus	Huawei Local Security Checks	2019/5/13	2024/5/23	critical

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