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。

  - l2tp避免 l2tp_tunnel_del_work() 中的一个数据争用 我们应该仅在处理内核套接字时读取 sk->sk_socket。 syzbot 报告以下 data-race: BUGKCSAN: l2tp_tunnel_del_work / sk_common_release 中的数据争用由任务 5365 在 cpu 0: sk_set_socket include/net/sock.h:2092 [inline] sock_orphan include/net/ 写入 8 字节的 0xffff88811c182b20 sock.h:2118 [inline] sk_common_release+0xae/0x230 net/core/sock.c:4003 udp_lib_close+0x15/0x20 include/net/udp.h:325 inet_release+0xce/0xf0 net/ipv4/af_inet.c:437 __sock_release net/socket.c:662 [内联] sock_close+0x6b/0x150 net/socket.c:1455
    __fput+0x29b/0x650 fs/file_table.c:468____fput+0x1c/0x30 fs/file_table.c:496 task_work_run+0x131/0x1a0 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [内联]
    __exit_to_user_mode_loop kernel/entry/common.c:44 [内联] exit_to_user_mode_loop+0x1fe/0x740 kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [内联] syscall_exit_to_user_mode_prepare include/linux/irq -entry-common.h:256 [内联] syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [内联] syscall_exit_to_user_mode include/linux/entry-common.h:194 [内联] do_syscall_64+0x1e1/0x2b0 arch/x86/ entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f 由 cpu 1 上的任务 827 读取到 0xffff88811c182b20 (8 字节)
    l2tp_tunnel_del_work+0x2f/0x1a0 net/l2tp/l2tp_core.c:1418 process_one_work kernel/workqueue.c:3257 [inline] process_scheduled_works+0x4ce/0x9d0 kernel/workqueue.c:3340 work_thread+0x582/0x770 kernel/workqueue.c:3421 kthread +0x489/0x510 kernel/kthread.c:463 ret_from_fork+0x149/0x290 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 值已更改
    0xffff88811b818000 -> 0x0000000000000000 (CVE-2026-23120)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

检测

Linux Distros 未修补的漏洞：CVE-2026-23120

medium Nessus 插件 ID 299174

版本 1.10