Linux/Unix 主机中安装的一个或多个程序包受到一个漏洞影响，而供应商没有提供补丁程序。

  - 已修复 Linux 内核中的下列漏洞：ASoC: SOF: debug: Fix potential buffer overflow by snprintf() snprintf() returns the would-be-filled size when the string overflows the given buffer size, hence using this value may result in the buffer overflow (although it's unrealistic). This patch replaces with a safer version, scnprintf() for papering over such a potential issue.
    (CVE-2022-50051)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

CentOS Linux 8.4 主机上存在安装的程序包，该程序包受到 TuxCare CENTOS8.4：CLSA-2026：2026：1782145985公告中提及的多个漏洞的影响。

  - Linux 内核 CIFS 实现版本 4.9.0 容易受到目录条目列表中相对路径注入的影响。(CVE-2019-10220)

  - 在 Linux 内核 5.3.2 及其之前版本的 drivers/infiniband/hw/cxgb4/mem.c 的 write_tpt_entry 中发现问题。cxgb4 驱动程序直接从堆栈变量中调用 dma_map_single（DMA 函数）。
    攻击者可利用此问题触发拒绝服务，如果在此堆栈/DMA 交互具有安全相关性的架构上使用此驱动程序，该漏洞可遭恶意利用。(CVE-2019-17075)

  - Linux 内核 4.20.5 及其之前版本的 KVM 实现中存在释放后使用。(CVE-2019-7221)

  - 此漏洞允许本地攻击者提升对 Linux 内核 5.14-rc3 的受影响装置的特权。要利用此漏洞，攻击者必须首先具备在目标系统上执行低权限代码的能力。处理 eBPF 程序时存在特定缺陷。造成此问题的原因是缺少对用户提供的 eBPF 程序的正确验证，这可导致类型混淆情形。攻击者可利用此漏洞，在内核的上下文中提升特权和执行任意代码。此漏洞之前为 ZDI-CAN-14689。(CVE-2021-34866)

  - 已修复 Linux 内核中的下列漏洞：kyber: fix out of bounds access when preempted __blk_mq_sched_bio_merge() gets the ctx and hctx for the current CPU and passes the hctx to
    ->bio_merge(). kyber_bio_merge() then gets the ctx for the current CPU again and uses that to get the corresponding Kyber context in the passed hctx. However, the thread may be preempted between the two calls to blk_mq_get_ctx(), and the ctx returned the second time may no longer correspond to the passed hctx.
    This works accidentally most of the time, but it can cause us to read garbage if the second ctx came from an hctx with more ctx's than the first one (i.e., if ctx->index_hw[hctx->type] > hctx->nr_ctx). This manifested as this UBSAN array index out of bounds error reported by Jakub: UBSAN: array-index-out-of-bounds in ../kernel/locking/qspinlock.c:130:9 index 13106 is out of range for type 'long unsigned int [128]' Call Trace: dump_stack+0xa4/0xe5 ubsan_epilogue+0x5/0x40
    __ubsan_handle_out_of_bounds.cold.13+0x2a/0x34 queued_spin_lock_slowpath+0x476/0x480 do_raw_spin_lock+0x1c2/0x1d0 kyber_bio_merge+0x112/0x180 blk_mq_submit_bio+0x1f5/0x1100 submit_bio_noacct+0x7b0/0x870 submit_bio+0xc2/0x3a0 btrfs_map_bio+0x4f0/0x9d0 btrfs_submit_data_bio+0x24e/0x310 submit_one_bio+0x7f/0xb0 submit_extent_page+0xc4/0x440
    __extent_writepage_io+0x2b8/0x5e0 __extent_writepage+0x28d/0x6e0 extent_write_cache_pages+0x4d7/0x7a0 extent_writepages+0xa2/0x110 do_writepages+0x8f/0x180 __writeback_single_inode+0x99/0x7f0 writeback_sb_inodes+0x34e/0x790 __writeback_inodes_wb+0x9e/0x120 wb_writeback+0x4d2/0x660 wb_workfn+0x64d/0xa10 process_one_work+0x53a/0xa80 worker_thread+0x69/0x5b0 kthread+0x20b/0x240 ret_from_fork+0x1f/0x30 Only Kyber uses the hctx, so fix it by passing the request_queue to ->bio_merge() instead. BFQ and mq-deadline just use that, and Kyber can map the queues itself to avoid the mismatch.
    (CVE-2021-46984)

请注意，Nessus 尚未测试这些问题，而是只依据应用程序自我报告的版本号进行判断。

如 TuxCare CENTOS8.5：CLSA-2026：1782146775公告所述，CentOS Linux 8.5 主机上安装的程序包受到多个漏洞的影响。

  - Linux 内核 CIFS 实现版本 4.9.0 容易受到目录条目列表中相对路径注入的影响。(CVE-2019-10220)

  - Linux 内核 4.20.5 及其之前版本的 KVM 实现中存在释放后使用。(CVE-2019-7221)

  - BlueZ 中存在输入验证不当的情况，未经身份验证的用户可能利用此漏洞，通过邻近访问，提升权限。(CVE-2020-12351)

  - BlueZ 中存在访问控制不当的情况，未经身份验证的用户可利用此问题，通过邻近访问造成信息泄露。(CVE-2020-12352)

  - BlueZ 中存在缓冲区限制不当的情况，未经身份验证的用户可能会利用此漏洞，通过邻近访问来造成拒绝服务。这会影响所有支持 BlueZ 的 Linux 内核版本。(CVE-2020-24490)

请注意，Nessus 尚未测试这些问题，而是只依据应用程序自我报告的版本号进行判断。

CentOS Linux 8 主机上存在安装的程序包，该程序包受到 TuxCare CENTOS-STREAM8：CLSA-2026：1782375682公告中提及的多个漏洞的影响。

  - 已修复 Linux 内核中的下列漏洞：bpf: Don't redirect packets with invalid pkt_len Syzbot found an issue [1]: fq_codel_drop() try to drop a flow whitout any skbs, that is, the flow->head is null. The root cause, as the [2] says, is because that bpf_prog_test_run_skb() run a bpf prog which redirects empty skbs. So we should determine whether the length of the packet modified by bpf prog or others like bpf_prog_test is valid before forwarding it directly. (CVE-2022-49975)

  - 已修复 Linux 内核中的下列漏洞：ASoC: SOF: debug: Fix potential buffer overflow by snprintf() snprintf() returns the would-be-filled size when the string overflows the given buffer size, hence using this value may result in the buffer overflow (although it's unrealistic). This patch replaces with a safer version, scnprintf() for papering over such a potential issue.
    (CVE-2022-50051)

  - 已修复 Linux 内核中的下列漏洞：x86/alternatives: Disable KASAN in apply_alternatives() Fei has reported that KASAN triggers during apply_alternatives() on a 5-level paging machine: BUG: KASAN: out-of-bounds in rcu_is_watching() Read of size 4 at addr ff110003ee6419a0 by task swapper/0/0 ... __asan_load4() rcu_is_watching() trace_hardirqs_on() text_poke_early() apply_alternatives() ... On machines with 5-level paging, cpu_feature_enabled(X86_FEATURE_LA57) gets patched. It includes KASAN code, where KASAN_SHADOW_START depends on __VIRTUAL_MASK_SHIFT, which is defined with cpu_feature_enabled(). KASAN gets confused when apply_alternatives() patches the KASAN_SHADOW_START users. A test patch that makes KASAN_SHADOW_START static, by replacing
    __VIRTUAL_MASK_SHIFT with 56, works around the issue. Fix it for real by disabling KASAN while the kernel is patching alternatives. [ mingo: updated the changelog ] (CVE-2023-52504)

  - 已修复 Linux 内核中的下列漏洞：drm/amd: Fix UBSAN array-index-out-of-bounds for SMU7 For pptable structs that use flexible array sizes, use flexible arrays. (CVE-2023-52818)

  - 已修复 Linux 内核中的下列漏洞：nbd: defer config unlock in nbd_genl_connect There is one use-after-free warning when running NBD_CMD_CONNECT and NBD_CLEAR_SOCK:
    nbd_genl_connect nbd_alloc_and_init_config // config_refs=1 nbd_start_device // config_refs=2 set NBD_RT_HAS_CONFIG_REF open nbd // config_refs=3 recv_work done // config_refs=2 NBD_CLEAR_SOCK // config_refs=1 close nbd // config_refs=0 refcount_inc -> uaf ------------[ cut here ]------------ refcount_t: addition on 0; use-after-free. WARNING: CPU: 24 PID: 1014 at lib/refcount.c:25 refcount_warn_saturate+0x12e/0x290 nbd_genl_connect+0x16d0/0x1ab0 genl_family_rcv_msg_doit+0x1f3/0x310 genl_rcv_msg+0x44a/0x790 The issue can be easily reproduced by adding a small delay before refcount_inc(&nbd->config_refs) in nbd_genl_connect(): mutex_unlock(&nbd->config_lock); if (!ret) {set_bit(NBD_RT_HAS_CONFIG_REF, &config->runtime_flags); + printk(before sleep\n); + mdelay(5 * 1000); + printk(after sleep\n); refcount_inc(&nbd->config_refs); nbd_connect_reply(info, nbd->index); } (CVE-2025-68366)

请注意，Nessus 尚未测试这些问题，而是只依据应用程序自我报告的版本号进行判断。

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
244084	Linux Distros 未修补的漏洞：CVE-2022-50051	Nessus	Misc.	2025/8/6	2026/9/30	high
360976	CentOS Linux 8.4 [TuxCare] 安全更新：bpftool / kernel / kernel-core / kernel-cross-headers / 等多个漏洞（CENTOS8.4：CLSA-2026：1782145985）	Nessus	CentOS Local Security Checks	2026/10/1	2026/10/1	high
360215	CentOS Linux 8.5 [TuxCare] 安全更新：bpftool / kernel / kernel-core / kernel-cross-headers / 等多个漏洞（CENTOS8.5：CLSA-2026：1782146775）	Nessus	CentOS Local Security Checks	2026/10/1	2026/10/1	high
361917	CentOS Linux 8 [TuxCare] 安全更新：bpftool / kernel / kernel-core / kernel-cross-headers / 等多个漏洞（CENTOS-STREAM8：CLSA-2026：1782375682）	Nessus	CentOS Local Security Checks	2026/10/1	2026/10/1	high

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