CentOS Linux 8.5 [TuxCare] 安全更新：bpftool / kernel / kernel-core / kernel-cross-headers / 等 （CENTOS8.5：CLSA-2026：1783789559）
high Nessus 插件 ID 360756
语言：
简介
CentOS Linux 主机缺少一个或多个安全更新。描述
CentOS Linux 8.5 主机上存在安装的程序包，该程序包受到 TuxCare CENTOS8.5：CLSA-2026：U 1783789559公告中提及的漏洞的影响。- 已修复 Linux 内核中的下列漏洞：rtmutex: Use waiter::task instead of current in remove_waiter() remove_waiter() is used by the slowlock paths, but it is also used for proxy-lock rollback in rt_mutex_start_proxy_lock() when invoked from futex_requeue(). In the latter case waiter::task is not current, but remove_waiter() operates on current for the dequeue operation. That results in several problems: 1) the rbtree dequeue happens without waiter::task::pi_lock being held 2) the waiter task's pi_blocked_on state is not cleared, which leaves a dangling pointer primed for UAF around.
3) rt_mutex_adjust_prio_chain() operates on the wrong top priority waiter task Use waiter::task instead of current in all related operations in remove_waiter() to cure those problems. [ tglx: Fixup rt_mutex_adjust_prio_chain(), add a comment and amend the changelog ] (CVE-2026-43499)
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。
解决方案
根据 TuxCare 公告 CENTOS8.5：CLSA-2026：1783789559 中的指南更新受影响的程序包。另见
插件详情
严重性: High
ID: 360756
文件名: tuxcare_centos_8.5_CLSA-2026-1783789559.nasl
版本: 1.2
类型: Local
代理: unix
发布时间: 2026/10/1
最近更新时间: 2026/10/2
支持的传感器: Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus
风险信息
VPR
风险因素: Critical
分数: 9.5
百分位: 99.87
Vendor
Vendor Severity: Important
CVSS v2
风险因素: Medium
基本分数: 6.8
时间分数: 5.9
矢量: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C
CVSS 分数来源: CVE-2026-43499
CVSS v3
风险因素: High
基本分数: 7.8
时间分数: 7.5
矢量: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
时间矢量: CVSS:3.0/E:H/RL:O/RC:C
漏洞信息
必需的 KB 项: Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list, Host/OS/extended-third-party
可利用: true
易利用性: Exploits are available
补丁发布日期: 2026/7/11
漏洞发布日期: 2026/5/21
参考资料信息
CVE: CVE-2026-43499
CLSA: 2026:1783789559