Linux/Unix 主機上安裝了一個或多個受到弱點影響的套件，且供應商未提供可用的修補程式。

  - net當通訊端建立失敗時不留下懸置的 sk 指標。藉由* 將 fentry 探查附加至 __sock_release() 和該探查呼叫 bpf_get_socket_cookie() 協助程式 * 執行 traceroute - I 1.1.1.1 在全新啟動的 VM 上啟用 KASAN 的核心會記錄類似以下的內容 (已解碼且已去除) =========================== ======================================= 錯誤
    KASAN__sock_gen_cookie 中的 slab 釋放後使用 (./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) 由 task traceroute/299 CPU於 addr ffff888007110dd8 讀取大小為 8 的 CPU: 2 PID: 299 Comm: traceroute 受污染的 GE 6.10.0-rc2+ #2 硬體名稱QEMU Standard PC (i440FX + PIIX, 1996)BIOS 1.16.2-debian-1.16.2-1 04/01/2014 呼叫追踪 <TASK> dump_stack_lvl (lib/dump_stack.c:117 (辨別器 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:29) bpf_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 cpu 2 上 78.328492s 上的工作 299 配置 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:338) kmem_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) 已由 cpu 2 上的 78.328502s 上的工作 299 釋放 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) pox_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) 修正此方法為清除 sk_common_release() 中的 struct 通訊端參照以涵蓋所有通訊協定係列 create 函式而該函式可能已將參照附加至具有 sock_init_data() 的 sk 物件。 (CVE-2024-40954)

請注意，Nessus 依賴供應商報告的套件存在。

偵測

Linux Distros 未修補的弱點：CVE-2024-40954

high Nessus Plugin ID 228770

版本 1.25