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

  - In do_epoll_ctl and ep_loop_check_proc of eventpoll.c,     there is a possible use after free due to a logic     error. This could lead to local escalation of privilege     with no additional execution privileges needed. User     interaction is not needed for exploitation.Product:
    AndroidVersions: Android kernelAndroid ID:
    A-147802478References: Upstream kernel(CVE-2020-0466)

  - In the l2tp subsystem, there is a possible use after     free due to a race condition. This could lead to local     escalation of privilege with System execution     privileges needed. User interaction is not needed for     exploitation.Product: AndroidVersions: Android     kernelAndroid ID: A-152409173(CVE-2020-27067)

  - In the nl80211_policy policy of nl80211.c, there is a     possible out of bounds read due to a missing bounds     check. This could lead to local information disclosure     with System execution privileges needed. User     interaction is not required for exploitation.Product:
    AndroidVersions: Android kernelAndroid ID:
    A-119770583(CVE-2020-27068)

  - In audit_free_lsm_field of auditfilter.c, there is a     possible bad kfree due to a logic error in     audit_data_to_entry. This could lead to local     escalation of privilege with no additional execution     privileges needed. User interaction is not needed for     exploitation.Product: AndroidVersions: Android     kernelAndroid ID: A-150693166References: Upstream     kernel(CVE-2020-0444)

  - In various methods of hid-multitouch.c, there is a     possible out of bounds write due to a missing bounds     check. This could lead to local escalation of privilege     with no additional execution privileges needed. User     interaction is not needed for exploitation.Product:
    AndroidVersions: Android kernelAndroid ID:
    A-162844689References: Upstream kernel(CVE-2020-0465)

  - Use-after-free vulnerability in fs/block_dev.c in the     Linux kernel before 5.8 allows local users to gain     privileges or cause a denial of service by leveraging     improper access to a certain error     field.(CVE-2020-15436)

  - The Linux kernel before version 5.8 is vulnerable to a     NULL pointer dereference in     drivers/tty/serial/8250/8250_core.c:serial8250_isa_init
    _ports() that allows local users to cause a denial of     service by using the p->serial_in pointer which     uninitialized.(CVE-2020-15437)

  - A flaw was found in the Linux kernels implementation of     MIDI, where an attacker with a local account and the     permissions to issue an ioctl commands to midi devices,     could trigger a use-after-free. A write to this     specific memory while freed and before use could cause     the flow of execution to change and possibly allow for     memory corruption or privilege     escalation.(CVE-2020-27786)

  - No description is available for this     CVE.(CVE-2020-27815)

  - NULL-ptr deref in the spk_ttyio_receive_buf2() function     in spk_ttyio.c(CVE-2020-27830)

  - An issue was discovered in __split_huge_pmd in     mm/huge_memory.c in the Linux kernel before 5.7.5. The     copy-on-write implementation can grant unintended write     access because of a race condition in a THP mapcount     check, aka CID-c444eb564fb1.(CVE-2020-29368)

  - An issue was discovered in kmem_cache_alloc_bulk in     mm/slub.c in the Linux kernel before 5.5.11. The     slowpath lacks the required TID increment, aka     CID-fd4d9c7d0c71.(CVE-2020-29370)

  - An issue was discovered in romfs_dev_read in     fs/romfs/storage.c in the Linux kernel before 5.8.4.
    Uninitialized memory leaks to userspace, aka     CID-bcf85fcedfdd.(CVE-2020-29371)

  - A locking inconsistency issue was discovered in the tty     subsystem of the Linux kernel through 5.9.13.
    drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c may     allow a read-after-free attack against TIOCGSID, aka     CID-c8bcd9c5be24.(CVE-2020-29660)

  - A locking issue was discovered in the tty subsystem of     the Linux kernel through 5.9.13.
    drivers/tty/tty_jobctrl.c allows a use-after-free     attack against TIOCSPGRP, aka     CID-54ffccbf053b.(CVE-2020-29661)

  - A slab-out-of-bounds read in fbcon in the Linux kernel     before 5.9.7 could be used by local attackers to read     privileged information or potentially crash the kernel,     aka CID-3c4e0dff2095. This occurs because     KD_FONT_OP_COPY in drivers/tty/vt/vt.c can be used for     manipulations such as font height.(CVE-2020-28974)

  - An issue was discovered in the Linux kernel through     5.9.1, as used with Xen through 4.14.x. Guest OS users     can cause a denial of service (host OS hang) via a high     rate of events to dom0, aka     CID-e99502f76271.(CVE-2020-27673)

  - An issue was discovered in     drivers/accessibility/speakup/spk_ttyio.c in the Linux     kernel through 5.9.9. Local attackers on systems with     the speakup driver could cause a local denial of     service attack, aka CID-d41227544427. This occurs     because of an invalid free when the line discipline is     used more than once.(CVE-2020-28941)

  - An issue was discovered in the Linux kernel through     5.9.1, as used with Xen through 4.14.x.
    drivers/xen/events/events_base.c allows event-channel     removal during the event-handling loop (a race     condition). This can cause a use-after-free or NULL     pointer dereference, as demonstrated by a dom0 crash     via events for an in-reconfiguration paravirtualized     device, aka CID-073d0552ead5.(CVE-2020-27675)

  - A buffer over-read (at the framebuffer layer) in the     fbcon code in the Linux kernel before 5.8.15 could be     used by local attackers to read kernel memory, aka     CID-6735b4632def.(CVE-2020-28915)

  - A flaw was found in the Linux kernel. A use-after-free     memory flaw was found in the perf subsystem allowing a     local attacker with permission to monitor perf events     to corrupt memory and possibly escalate privileges. The     highest threat from this vulnerability is to data     confidentiality and integrity as well as system     availability.(CVE-2020-14351)

  - A flaw in the way reply ICMP packets are limited in the     Linux kernel functionality was found that allows to     quickly scan open UDP ports. This flaw allows an     off-path remote user to effectively bypassing source     port UDP randomization. The highest threat from this     vulnerability is to confidentiality and possibly     integrity, because software that relies on UDP source     port randomization are indirectly affected as well.
    Kernel versions before 5.10 may be vulnerable to this     issue.(CVE-2020-25705)

  - No description is available for this     CVE.(CVE-2020-25668)

  - No description is available for this     CVE.(CVE-2020-25669)

  - A flaw was found in the way RTAS handled memory     accesses in userspace to kernel communication. On a     locked down (usually due to Secure Boot) guest system     running on top of PowerVM or KVM hypervisors (pseries     platform) a root like local user could use this flaw to     further increase their privileges to that of a running     kernel.(CVE-2020-27777)

  - kernel: perf_event_parse_addr_filter     memory(CVE-2020-25704)

  - Insufficient access control in the Linux kernel driver     for some Intel(R) Processors may allow an authenticated     user to potentially enable information disclosure via     local access.(CVE-2020-8694)

  - A flaw was found in the Linux kernel. A use-after-free     was found in the way the console subsystem was using     ioctls KDGKBSENT and KDSKBSENT. A local user could use     this flaw to get read memory access out of bounds. The     highest threat from this vulnerability is to data     confidentiality.(CVE-2020-25656)

  - In kbd_keycode of keyboard.c, there is a possible out     of bounds write due to a missing bounds check. This     could lead to local escalation of privilege with no     additional execution privileges needed. User     interaction is not needed for exploitation.Product:
    AndroidVersions: Android kernelAndroid ID:
    A-144161459(CVE-2020-0431)

  - A flaw was found in the HDLC_PPP module of the Linux     kernel in versions before 5.9-rc7. Memory corruption     and a read overflow is caused by improper input     validation in the ppp_cp_parse_cr function which can     cause the system to crash or cause a denial of service.
    The highest threat from this vulnerability is to data     confidentiality and integrity as well as system     availability.(CVE-2020-25643)

  - A flaw was found in the Linux kernel in versions before     5.9-rc7. Traffic between two Geneve endpoints may be     unencrypted when IPsec is configured to encrypt traffic     for the specific UDP port used by the GENEVE tunnel     allowing anyone between the two endpoints to read the     traffic unencrypted. The main threat from this     vulnerability is to data     confidentiality.(CVE-2020-25645)

  - Vulnerability Summary for     CVE-2020-12351(CVE-2020-12351)

  - Vulnerability Summary for     CVE-2020-12352(CVE-2020-12352)

  - Vulnerability Summary for     CVE-2020-24490(CVE-2020-24490)

  - A missing CAP_NET_RAW check in NFC socket creation in     net/nfc/rawsock.c in the Linux kernel before 5.8.2     could be used by local attackers to create raw sockets,     bypassing security mechanisms, aka     CID-26896f01467a.(CVE-2020-26088)

  - A flaw was found in the Linux kernel's implementation     of biovecs in versions before 5.9-rc7. A zero-length     biovec request issued by the block subsystem could     cause the kernel to enter an infinite loop, causing a     denial of service. This flaw allows a local attacker     with basic privileges to issue requests to a block     device, resulting in a denial of service. The highest     threat from this vulnerability is to system     availability.(CVE-2020-25641)

  - In skb_to_mamac of networking.c, there is a possible     out of bounds write due to an integer overflow. This     could lead to local escalation of privilege with no     additional execution privileges needed. User     interaction is not needed for exploitation.Product:
    AndroidVersions: Android kernelAndroid ID:
    A-143560807(CVE-2020-0432)

  - A race condition between hugetlb sysctl handlers in     mm/hugetlb.c in the Linux kernel before 5.8.8 could be     used by local attackers to corrupt memory, cause a NULL     pointer dereference, or possibly have unspecified other     impact, aka CID-17743798d812.(CVE-2020-25285)

  - A flaw was found in the Linux kernel in versions from     2.2.3 through 5.9.rc5. When changing screen size, an     out-of-bounds memory write can occur leading to memory     corruption or a denial of service. This highest threat     from this vulnerability is to system     availability.(CVE-2020-14390)

  - A flaw was found in the Linux kernel before 5.9-rc4.
    Memory corruption can be exploited to gain root     privileges from unprivileged processes. The highest     threat from this vulnerability is to data     confidentiality and integrity.(CVE-2020-14386)

  - Insufficient input validation in i40e driver for     Intel(R) Ethernet 700 Series Controllers versions     before 7.0 may allow an authenticated user to     potentially enable a denial of service via local     access.(CVE-2019-0147)

  - A TOCTOU mismatch in the NFS client code in the Linux     kernel before 5.8.3 could be used by local attackers to     corrupt memory or possibly have unspecified other     impact because a size check is in fs/nfs/nfs4proc.c     instead of fs/nfs/nfs4xdr.c, aka     CID-b4487b935452.(CVE-2020-25212)

  - A flaw was found in the Linux kernel before 5.9-rc4. A     failure of the file system metadata validator in XFS     can cause an inode with a valid, user-creatable     extended attribute to be flagged as corrupt. This can     lead to the filesystem being shutdown, or otherwise     rendered inaccessible until it is remounted, leading to     a denial of service. The highest threat from this     vulnerability is to system     availability.(CVE-2020-14385)

  - In uvc_scan_chain_forward of uvc_driver.c, there is a     possible linked list corruption due to an unusual root     cause. This could lead to local escalation of privilege     in the kernel with no additional execution privileges     needed. User interaction is not needed for     exploitation.Product: AndroidVersions: Android     kernelAndroid ID: A-111893654References: Upstream     kernel(CVE-2020-0404)

  - The rbd block device driver in drivers/block/rbd.c in     the Linux kernel through 5.8.9 used incomplete     permission checking for access to rbd devices, which     could be leveraged by local attackers to map or unmap     rbd block devices, aka     CID-f44d04e696fe.(CVE-2020-25284)

  - A memory out-of-bounds read flaw was found in the Linux     kernel before 5.9-rc2 with the ext3/ext4 file system,     in the way it accesses a directory with broken     indexing. This flaw allows a local user to crash the     system if the directory exists. The highest threat from     this vulnerability is to system     availability.(CVE-2020-14314)

  - A flaw null pointer dereference in the Linux kernel     cgroupv2 subsystem in versions before 5.7.10 was found     in the way when reboot the system. A local user could     use this flaw to crash the system or escalate their     privileges on the system.(CVE-2020-24394)

  - A flaw was found in the Linux kernel's implementation     of the invert video code on VGA consoles when a local     attacker attempts to resize the console, calling an     ioctl VT_RESIZE, which causes an out-of-bounds write to     occur. This flaw allows a local user with access to the     VGA console to crash the system, potentially escalating     their privileges on the system. The highest threat from     this vulnerability is to data confidentiality and     integrity as well as system     availability.(CVE-2020-14331)

  - The Linux kernel, as used in Red Hat Enterprise Linux     7, kernel-rt, and Enterprise MRG 2 and when booted with     UEFI Secure Boot enabled, allows local users to bypass     intended securelevel/secureboot restrictions by     leveraging improper handling of secure_boot flag across     kexec reboot.(CVE-2015-7837)

  - In the Linux kernel through 5.8.7, local attackers able     to inject conntrack netlink configuration could     overflow a local buffer, causing crashes or triggering     use of incorrect protocol numbers in     ctnetlink_parse_tuple_filter in     net/netfilter/nf_conntrack_netlink.c, aka     CID-1cc5ef91d2ff.(CVE-2020-25211)

  - A flaw null pointer dereference in the Linux kernel     cgroupv2 subsystem in versions before 5.7.10 was found     in the way when reboot the system. A local user could     use this flaw to crash the system or escalate their     privileges on the system.(CVE-2020-14356)

  - Buffer overflow in i40e driver for Intel(R) Ethernet     700 Series Controllers versions before 7.0 may allow an     authenticated user to potentially enable an escalation     of privilege via local access.(CVE-2019-0145)

  - The Linux kernel through 5.7.11 allows remote attackers     to make observations that help to obtain sensitive     information about the internal state of the network     RNG, aka CID-f227e3ec3b5c. This is related to     drivers/char/random.c and     kernel/time/timer.c.(CVE-2020-16166)

  - The VFIO PCI driver in the Linux kernel through 5.6.13     mishandles attempts to access disabled memory     space.(CVE-2020-12888)

  - In the Linux kernel through 5.7.6, usbtest_disconnect     in drivers/usb/misc/usbtest.c has a memory leak, aka     CID-28ebeb8db770.(CVE-2020-15393)

  - A logic bug was found in the Linux kernels     implementation of SSBD. A bug in the logic handling can     allow an attacker with a local account to disable SSBD     protection during a context switch when additional     speculative execution mitigations are in     place.(CVE-2020-10766)

  - The prctl() function can be used to enable indirect     branch speculation even after it has been disabled.
    This same call will incorrectly report it being 'force     disabled' when it is not.(CVE-2020-10768)

  - A flaw was found in the Linux kernel's implementation     of the Enhanced IBPB (Indirect Branch Prediction     Barrier). The IBPB mitigation will be disabled when     STIBP is not available or when the Enhanced Indirect     Branch Restricted Speculation (IBRS) is available. This     flaw allows a local attacker to perform a Spectre V2     style attack when this configuration is active. The     highest threat from this vulnerability is to     confidentiality.(CVE-2020-10767)

  - A flaw was found in the ZRAM kernel module, where a     user with a local account and the ability to read the     /sys/class/zram-control/hot_add file can create ZRAM     device nodes in the /dev/ directory. This read     allocates kernel memory and is not accounted for a user     that triggers the creation of that ZRAM device. With     this vulnerability, continually reading the device may     consume a large amount of system memory and cause the     Out-of-Memory (OOM) killer to activate and terminate     random userspace processes, possibly making the system     inoperable.(CVE-2020-10781)

  - A flaw was found in the Linux kernel. An index buffer     overflow during Direct IO write leading to the NFS     client to crash. In some cases, a reach out of the     index after one memory allocation by kmalloc will cause     a kernel panic. The highest threat from this     vulnerability is to data confidentiality and system     availability.(CVE-2020-10742)

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.

SUSE Linux Enterprise 12 SP5カーネルが更新され、さまざまなセキュリティとバグの修正が行われています。

以下のセキュリティバグが修正されました。

CVE-2020-26088：ローカルの攻撃者によって使用され、セキュリティメカニズムをバイパスしてrawソケットが作成される可能性があった、NFCソケット作成における不適切なCAP_NET_RAWチェックを修正しました（bsc#1176990）。

CVE-2020-14390：画面サイズの変更時にメモリ破損またはサービス拒否につながる可能性があった、領域外のメモリ書き込みを修正しました（bnc#1176235）。

CVE-2020-0432：整数オーバーフローによる領域外書き込みを修正しました（bsc#1176721）。

CVE-2020-0427：Use-After-Freeによる領域外読み取りを修正しました（bsc#1176725）。

CVE-2020-0431：境界チェックの欠落による領域外書き込みを修正しました（bsc#1176722）。

CVE-2020-0404：異常な根本原因によるリンクリスト破損を修正しました（bsc#1176423）。

CVE-2020-25212：getxattrカーネルパニックとメモリオーバーフローを修正しました（bsc#1176381）。

CVE-2020-25284：rbdデバイスへのアクセスに対する不完全な権限チェックを修正しました。ローカルの攻撃者がこの権限チェックを利用して、rbdブロックデバイスのマッピングまたはマッピング解除を行う可能性がありました（bsc#1176482）。

CVE-2020-14381：参照をドロップする際にfilpが有効となるようにリキューパスを修正しました（bsc#1176011）。

CVE-2019-25643：メモリ破損と読み取りオーバーフローを引き起こす可能性があったppp_cp_parse_cr関数の不適切な入力検証を修正しました（bsc#1177206）。

CVE-2020-25641：長さbvecがソフトロックアップを引き起こしていたannの問題を修正しました（bsc#1177121）。

更新パッケージには、セキュリティ関連以外の修正も含まれています。詳細については、アドバイザリを参照してください。

注意：Tenable Network Securityは、前述の記述ブロックをSUSEセキュリティアドバイザリから直接抽出しています。Tenableでは、そこに新しい問題を追加することはせずに、できる限り自動的に整理と書式設定をするようにしています。

SUSE Linux Enterprise 15 LTSSカーネルが更新され、さまざまなセキュリティとバグ修正が適用されました。

以下のセキュリティバグが修正されました。

CVE-2020-25705：返信ICMPパケットが制限される方法で、開いているUDPポートを素早くスキャンできる欠陥が見つかりました。この欠陥により、オフパスのリモートユーザーがソースポートのUDPランダム化を効果的にバイパスできました。この脆弱性からの最も高い脅威は、機密性およびおそらくは整合性に対するものです。これは、UDPソースポートのランダム化に依存するソフトウェアとサービス（DNSなど）も間接的に影響を受けるためです。カーネルバージョンは、この問題に対して脆弱である可能性があります（bsc#1175721、bsc#1178782）。

CVE-2020-25704：perf_event_parse_addr_filter()におけるメモリリークを修正しました（bsc#1178393）。

CVE-2020-25668：con_font_op()でのUse-After-Freeを修正しました（bnc#1178123）。

CVE-2020-25656：vt_do_kdgkb_ioctlでの同時実行のUse-After-Freeを修正しました（bnc#1177766）。

CVE-2020-25285：mm/hugetlb.cのhugetlb sysctlハンドラー間の競合状態を修正しました（bnc#1176485）。

CVE-2020-0430：/include/linux/skbuff.hのskb_headlenでのOOB読み取りを修正しました（bnc#1176723）。

CVE-2020-14351：perf_mmap_close()関数の競合を修正しました（bsc#1177086）。

CVE-2020-16120：overlayfs使用時に本物のファイルを開くための権限チェックを修正しました。権限のないユーザーが読み取り可能ではないファイルをそのユーザーが制御するマウントポイントにコピーし、そのファイルにアクセスできるようにすることが可能でした（bsc#1177470）。

CVE-2020-8694：エネルギーメーターをルートアクセスに制限しました（bsc#1170415）。

CVE-2020-12351：「BleedingTooth」（別名「BadKarma」）として知られる、AMPパケットを処理する際の型の取り違えを修正しました（bsc#1177724）。

CVE-2020-12352：「BleedingTooth」として知られる、特定のAMPパケットを処理する際の情報漏洩を修正しました（bsc#1177725）。

CVE-2020-25212：getxattrカーネルパニックとメモリオーバーフローを修正しました（bsc#1176381）。

CVE-2020-25645：2つのGeneveエンドポイント間のトラフィックが暗号化されないことを引き起こしていたIPsecの問題を修正しました（bnc#1177511）。

CVE-2020-2521：getxattrカーネルパニックとメモリオーバーフローを修正しました（bsc#1176381）。

CVE-2020-14381：メモリ破損やおそらくは権限昇格を引き起こす可能性があった、高速ユーザーmutex（futex）待機操作におけるUse-After-Freeを修正しました（bsc#1176011）。

CVE-2020-25643：ppp_cp_parse_cr関数の不適切な入力検証によって引き起こされる可能性があった、メモリ破損と読み取りオーバーフローを修正しました（bsc#1177206）。

CVE-2020-25641：カーネルが無限ループに陥り、サービス拒否が引き起こされる可能性があった、ブロックサブシステムが発行するゼロレングスbiovecリクエストを修正しました（bsc#1177121）。

CVE-2020-26088：ローカルの攻撃者によって使用され、セキュリティメカニズムをバイパスしてrawソケットが作成される可能性があった、NFCソケット作成における不適切なCAP_NET_RAWチェックを修正しました（bsc#1176990）。

CVE-2020-14390：画面サイズの変更時にメモリ破損またはサービス拒否につながる可能性があった、領域外のメモリ書き込みを修正しました（bnc#1176235）。

CVE-2020-0432：整数オーバーフローによる領域外書き込みを修正しました（bsc#1176721）。

CVE-2020-0427：Use-After-Freeによる領域外読み取りを修正しました（bsc#1176725）。

CVE-2020-0431：境界チェックの欠落による領域外書き込みを修正しました（bsc#1176722）。

CVE-2020-0404：異常な根本原因によるリンクリスト破損を修正しました（bsc#1176423）。

CVE-2020-25284：rbdデバイスへのアクセスに対する不完全な権限チェックを修正しました。ローカルの攻撃者がこの権限チェックを利用して、rbdブロックデバイスのマッピングまたはマッピング解除を行う可能性がありました（bsc#1176482）。

CVE-2020-27673：悪意のあるゲストが高頻度のイベントでDom0のサービス拒否を引き起こす可能性があった問題を修正しました（XSA-332 bsc#1177411）

CVE-2020-27675：dom0をクラッシュさせる可能性があるイベントハンドラーの競合状態を修正しました（XSA-331 bsc#1177410）。

更新パッケージには、セキュリティ関連以外の修正も含まれています。詳細については、アドバイザリを参照してください。

注意：Tenable Network Securityは、前述の記述ブロックをSUSEセキュリティアドバイザリから直接抽出しています。Tenableでは、そこに新しい問題を追加することはせずに、できる限り自動的に整理と書式設定をするようにしています。

セキュリティ問題を修正する新しいカーネルパッケージが、Slackware 14.2で利用可能です。

ID	名稱	產品	系列	已發布	已更新	嚴重性
147512	EulerOS Virtualization 2.9.1 : kernel (EulerOS-SA-2021-1604)	Nessus	Huawei Local Security Checks	2021/3/10	2023/2/9	critical
141161	openSUSEセキュリティ更新プログラム：Linux カーネル（openSUSE-2020-1586）	Nessus	SuSE Local Security Checks	2020/10/5	2024/2/16	high
143708	SUSE SLES12セキュリティ更新プログラム：カーネル（SUSE-SU-2020:2904-1）	Nessus	SuSE Local Security Checks	2020/12/9	2022/5/11	high
143875	SUSE SLES15セキュリティ更新プログラム：カーネル（SUSE-SU-2020:3532-1）	Nessus	SuSE Local Security Checks	2020/12/9	2022/12/5	high
141789	Slackware 14.2：Slackware 14.2カーネル (SSA:2020-295-01)	Nessus	Slackware Local Security Checks	2020/10/22	2022/5/11	high

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