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：U 1778783204公告中提及的漏洞的影响。

  - 已修复 Linux 内核中的下列漏洞：net: skbuff: preserve shared-frag marker during coalescing skb_try_coalesce() can attach paged frags from @from to @to. If @from has SKBFL_SHARED_FRAG set, the resulting @to skb can contain the same externally-owned or page-cache-backed frags, but the shared-frag marker is currently lost. That breaks the invariant relied on by later in-place writers. In particular, ESP input checks skb_has_shared_frag() before deciding whether an uncloned nonlinear skb can skip skb_cow_data(). If TCP receive coalescing has moved shared frags into an unmarked skb, ESP can see skb_has_shared_frag() as false and decrypt in place over page-cache backed frags.
    Propagate SKBFL_SHARED_FRAG when skb_try_coalesce() transfers paged frags. The tailroom copy path does not need the marker because it copies bytes into @to's linear data rather than transferring frag descriptors.
    (CVE-2026-46300)

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

检测

CentOS Linux 8.4 [TuxCare] 安全更新：bpftool / kernel / kernel-core / kernel-cross-headers / 等（CENTOS8.4：CLSA-2026：1778783204）

high Nessus 插件 ID 362018

版本 1.4

检测

CentOS Linux 8.4 [TuxCare] 安全更新：bpftool / kernel / kernel-core / kernel-cross-headers / 等 （CENTOS8.4：CLSA-2026：1778783204）

high Nessus 插件 ID 362018

版本 1.4

CentOS Linux 8.4 [TuxCare] 安全更新：bpftool / kernel / kernel-core / kernel-cross-headers / 等（CENTOS8.4：CLSA-2026：1778783204）