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。

  - mptcp在 mptcp_do_fastclose() 中呼叫 tcp_send_active_reset() 之前初始化 rcv_mss。 syzbot 報告 MPTCP 通訊端在 __tcp_select_window() 中發生除以零問題。 [0] 純 TCP 有一個類似的問題該問題已在認可 499350a5a6e7 中修正 (tcp將 rcv_mss 初始化為 TCP_MIN_MSS 而非 0)。讓我們將相同的修正套用至 mptcp_do_fastclose()。 [0]Oops除法錯誤0000 [#1] SMP KASAN PTI CPU0 UID0 PID6068 通訊syz.0.17 未受污染的 syzkaller #0 PREEMPT(完整) 硬體名稱Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:__tcp_select_window+0x824/0x1320 net/ipv4/tcp_output.c:3336 程式碼ff ff ff 44 89 f1 d3 e0 89 c1 f7 d1 41 01 cc 41 21 c4 e9 a9 00 00 00 e8 ca 49 01 f8 e9 9c 00 00 00 e8 c0 49 01 f8 44 89 e0 99 <f7> 7c 24 1c 41 29 d4 48 bb 00 00 00 00 00 fc ff df e9 80 00 00 00 RSP: 0018740ffc EFLA90GS00000031 00010293 RAX 0000000000000000 RBX 0000000000000000 RCX ffff88807b469e40 RDX 0000000000000000 RSI 0000000000000000 RDI 00000000000000000000000
     R08ffffc90003017730  : ffff888033268143 R09: 1ffff1100664d028 R10: dffffc0000000000 R11: ffffed100664d029 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS:
    000055557faa0500(0000) GS:ffff888126135000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0
    0000000080050033 CR2: 00007f64a1912ff8 CR3: 0000000072122000 CR4: 00000000003526f0 Call Trace: <TASK> tcp_select_window net/ipv4/tcp_output.c:281 [inline] __tcp_transmit_skb+0xbc7/0x3aa0 net/ipv4/tcp_output.c:1568 tcp_transmit_skb net/ipv4/tcp_output.c 1649 [內嵌] tcp_send_active_reset+0x2d1/0x5b0 net/ipv4/tcp_output.c:3836 mptcp_do_fastclose+0x27e/0x380 net/mptcp/protocol.c:2793 mptcp_disconnect+0x238/0x710 net/mptcp/protocol.c:3253 mptcp2f_sendmsgfast_open+0 /0x580 net/mptcp/protocol.c:1776 mptcp_sendmsg+0x1774/0x1980 net/mptcp/protocol.c:1855 sock_sendmsg_nosec net/socket.c:727 [內嵌] __sock_sendmsg+0xe5/0x270 net/socket.c:742 __sys_sendto+ 0x3bd/0x520 net/socket.c:2244 __do_sys_sendto net/socket.c:2251 [內嵌]
    __se_sys_sendto net/socket.c:2247 [內嵌] __x64_sys_sendto+0xde/0x100 net/socket.c:2247 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [內嵌] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64 .c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f66e998f749 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffff9acedb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f66e9be5fa0 RCX: 00007f66e998f749 RDX
    0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007ffff9acee10 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13:
    00007f66e9be5fa0 R14: 00007f66e9be5fa0 R15: 0000000000000006 </TASK> (CVE-2025-68291)

請注意，Nessus 的判定取決於廠商所報告的套件是否存在。

偵測

Linux Distros 未修補的弱點：CVE-2025-68291

medium Nessus Plugin ID 278858

版本 1.23