Linux/Unix 主機上安裝了一個或多個受到弱點影響的套件，且供應商未提供可用的修補程式。

  - 已解決 Linux 核心中的下列弱點：rcutorture: Fix ksoftirqd boosting timing and iteration The RCU priority boosting can fail in two situations: 1) If (nr_cpus= > maxcpus=), which means if the total number of CPUs is higher than those brought online at boot, then torture_onoff() may later bring up CPUs that weren't online on boot. Now since rcutorture initialization only boosts the ksoftirqds of the CPUs that have been set online on boot, the CPUs later set online by torture_onoff won't benefit from the boost, making RCU priority boosting fail. 2) The ksoftirqd kthreads are boosted after the creation of rcu_torture_boost() kthreads, which opens a window large enough for these rcu_torture_boost() kthreads to wait (despite running at FIFO priority) for ksoftirqds that are still running at SCHED_NORMAL priority. The issues can trigger for example with: ./kvm.sh --configs TREE01 --kconfig CONFIG_RCU_BOOST=y [ 34.968561] rcu-torture: !!! [ 34.968627] ------------[ cut here ]------------ [35.014054] WARNING: CPU: 4 PID: 114 at kernel/rcu/rcutorture.c:1979 rcu_torture_stats_print+0x5ad/0x610 [35.052043] Modules linked in: [ 35.069138] CPU: 4 PID: 114 Comm: rcu_torture_sta Not tainted 5.18.0-rc1 #1 [ 35.096424] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.14.0-0-g155821a-rebuilt.opensuse.org 04/01/2014 [ 35.154570] RIP:
    0010:rcu_torture_stats_print+0x5ad/0x610 [ 35.198527] Code: 63 1b 02 00 74 02 0f 0b 48 83 3d 35 63 1b 02 00 74 02 0f 0b 48 83 3d 21 63 1b 02 00 74 02 0f 0b 48 83 3d 0d 63 1b 02 00 74 02 <0f> 0b 83 eb 01 0f 8e ba fc ff ff 0f 0b e9 b3 fc ff f82 [ 37.251049] RSP: 0000:ffffa92a0050bdf8 EFLAGS: 00010202 [ 37.277320] rcu:
    De-offloading 8 [ 37.290367] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000001 [37.290387] RDX: 0000000000000000 RSI: 00000000ffffbfff RDI: 00000000ffffffff [ 37.290398] RBP:
    000000000000007b R08: 0000000000000000 R09: c0000000ffffbfff [ 37.290407] R10: 000000000000002a R11:
    ffffa92a0050bc18 R12: ffffa92a0050be20 [ 37.290417] R13: ffffa92a0050be78 R14: 0000000000000000 R15:
    000000000001bea0 [ 37.290427] FS: 0000000000000000(0000) GS:ffff96045eb00000(0000) knlGS:0000000000000000 [ 37.290448] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.290460] CR2: 0000000000000000 CR3:
    000000001dc0c000 CR4: 00000000000006e0 [ 37.290470] Call Trace: [ 37.295049] <TASK> [ 37.295065] ? preempt_count_add+0x63/0x90 [ 37.295095] ? _raw_spin_lock_irqsave+0x12/0x40 [ 37.295125] ? rcu_torture_stats_print+0x610/0x610 [ 37.295143] rcu_torture_stats+0x29/0x70 [ 37.295160] kthread+0xe3/0x110 [ 37.295176] ? kthread_complete_and_exit+0x20/0x20 [ 37.295193] ret_from_fork+0x22/0x30 [ 37.295218] </TASK> Fix this with boosting the ksoftirqds kthreads from the boosting hotplug callback itself and before the boosting kthreads are created. (CVE-2022-50177)

請注意，Nessus 依賴供應商報告的套件存在。

遠端 Redhat Enterprise Linux 8 主機上安裝的套件受到 RHSA-2022: 7683 公告中提及的多個弱點影響。

  - 核心：路徑外攻擊者可能會插入資料或終止受害者的 TCP 工作階段 (CVE-2020-36516)

  - 核心：當 vc_cons[i].d 已經是 NULL 時，VT_RESIZEX ioctl 中的爭用條件可導致 NULL 指標解除參照 (CVE-2020-36558)

  - 核心：drivers/media/v4l2-core/v4l2-ioctl.c 中 video_usercopy 函式的大型引數可觸發記憶體洩漏弱點 (CVE-2021-30002)

  - 核心：sco_sock_sendmsg() 函式中的釋放後使用弱點 (CVE-2021-3640)

  - 核心：smb2_ioctl_query_info 的 NULL 指標解除參照弱點 (CVE-2022-0168)

  - 核心：回寫期間，udf_expand_file_adinicbdue() 中發生 NULL 指標解除參照 (CVE-2022-0617)

  - 核心：DMA_FROM_DEVICE 的 swiotlb 資訊洩漏弱點 (CVE-2022-0854)

  - 核心：nft_do_chain 中堆疊上未初始化的暫存器可造成 UM 核心指標洩漏 (CVE-2022-1016)

  - 核心：snd_pcm_hw_free 中的爭用條件可導致釋放後使用 (CVE-2022-1048)

  - 核心：net/sched/cls_api.c 的 tc_new_tfilter() 中的釋放後使用弱點 (CVE-2022-1055)

  - 核心：KVM：cmpxchg_gpte 可寫入使用者空間區域之外的 pfns (

ID	名稱	產品	系列	已發布	已更新	嚴重性
245781	Linux Distros 未修補的弱點：CVE-2022-50177	Nessus	Misc.	2025/8/8	2025/10/28	high
167155	RHEL 8：核心 (RHSA-2022: 7683)	Nessus	Red Hat Local Security Checks	2022/11/9	2025/11/20	high
210815	RHEL 9：核心 (RHSA-2024:9315)	Nessus	Red Hat Local Security Checks	2024/11/12	2025/10/28	high

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