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。

  - net创建套接字失败时不保留悬摆 sk 指针可以通过以下方式触发释放后使用* 将 fentry 探测附加到 __sock_release() 并且该探测调用 bpf_get_socket_cookie() 辅助函数 * 运行 traceroute -我 1.1.1.1 在新启动的 VM 上启用 KASAN 的内核将记录如下所示的内容经解码和剥离 =========================== ======================================= 缺陷
    KASAN__sock_gen_cookie 中存在 slab 释放后使用 (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/ atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29) 在地址 ffff888007110dd8 处进行大小 8 的读取任务 traceroute/299 CPU:2 PID:299 Commtraceroute 污染的GE 6.10.0-rc2+ #2 硬件名称QEMU Standard PC (i440FX + PIIX, 1996)BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace <TASK> dump_stack_lvl (lib/dump_stack.c:117 (dispensator 1)) print_report (mm/kasan/report.c:378 mm/kasan/report.c:488) ？ __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net /core/sock_diag.c:29) kasan_report (mm/kasan/report.c:603) __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net /core/sock_diag.c:29) kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189)
    __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net /core/sock_diag.c:29bpf_get_socket_ptr_cookie (./arch/x86/include/asm/preempt.h:94 ./include/linux/sock_diag.h:42 net/core/filter.c:5094 net/core/ filter.c:5092) bpf_prog_875642cf11f1d139___sock_release+0x6e/0x8e bpf_trampoline_6442506592+0x47/0xaf __sock_release (net/socket.c:652) __sock_create (net/socket.c:1601) ... 由任务 299在 78.328492s的 cpu 2 上分配: kasan_save_stack (mm/kasan/common.c:48) kasan_save_track (mm/kasan/common.c:68) __kasan_slab_alloc (mm/kasan/common.c:312 mm/kasan/ common.c:338kmem_cache_alloc_noprof (mm/slub.c:3941 mm/slub.c:4000 mm/slub.c:4007) sk_prot_alloc (net/core/sock.c:2075) sk_alloc (net/core/sock. c:2134) inet_create (net/ipv4/af_inet.c:327 net/ipv4/af_inet.c:252) __sock_create (net/socket.c:1572) __sys_socket (net/socket.c:1660 net/socket.c 1644 net/socket.c:1706) __x64_sys_socket (net/socket.c:1718) do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) entry_SYSCALL_64_after_hwframe (arch/x86/ entry/entry_64.S:130) 由 cpu 2 上的任务 299 在 78.328502s 释放: kasan_save_stack (mm/kasan/common.c:48) kasan_save_track (mm/kasan/common.c:68) kasan_save_free_info (mm/kasan/generic) .c:582) oxide_slab_object (mm/kasan/common.c:242) __kasan_slab_free (mm/kasan/common.c:256) kmem_cache_free (mm/slub.c:4437 mm/slub.c:4511) __sk_destruct (net/ core/sock.c:2117 net/core/sock.c:2208 inet_create (net/ipv4/af_inet.c:397 net/ipv4/af_inet.c:252)
    __sock_create (net/socket.c:1572) __sys_socket (net/socket.c:1660 net/socket.c:1644 net/socket.c:1706)
    __x64_sys_socket (net/socket.c:1718) do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 修复通过清除 sk_common_release() 中的结构套接字引用来覆盖所有协议系列创建函数该引用可能已通过 sock_init_data() 将此引用附加到 sk 对象。 (CVE-2024-40954)

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-2024-40954

high Nessus 插件 ID 228770

版本 1.14