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。

  - smb用戶端修正重新連線通道時可能發生的鎖死問題。修正 cifs_signal_cifsd_for_reconnect() 以採用正確的鎖定順序並防止下列鎖死情況發生 ====================== ================================ 警告偵測到可能的循環鎖定相依性 6.16.0-rc3-build2+ #1301 污染GSW ------------------------------------------------- ----- cifsd/6055 嘗試取得鎖定 ffff88810ad56038 (&tcp_ses->srv_lock){+.+.}-{3:3}、
    cifs_signal_cifsd_for_reconnect+0x134/0x200 但工作已保留鎖定ffff888119c64330 (&ret_buf->chan_lock){+.+.}-{3:3}, at: cifs_signal_cifsd_for_reconnect+0xcf/0x200 其中鎖定已依賴新鎖定。現有的相依性鏈 (以相反順序) 為-> #2 (&ret_buf->chan_lock){+.+.}-{3:3}: validate_chain+0x1cf/0x270 __lock_acquire+0x60e/0x780 lock_acquire.part.0+0xb4 /0x1f0 _raw_spin_lock+0x2f/0x40 cifs_setup_session+0x81/0x4b0 cifs_get_smb_ses+0x771/0x900 cifs_mount_get_session+0x7e/0x170 cifs_mount+0x92/0x2d0 cifs_smb3_do_mount+0x161/0x460 smb3_get_tree+0x55/0x90 vfs_get_tree+0x46/0x180 do_new_mount+0x1b0/0x2e0 path_mount+0x6ee /0x740 do_mount+0x98/0xe0 __do_sys_mount+0x148/0x180 do_syscall_64+0xa4/0x260 entry_SYSCALL_64_after_hwframe+0x76/0x7e -> #1 (&ret_buf->ses_lock){+.+.}-{3:3}
    validate_chain+0x1cf/0x270 __lock_acquire+0x60e/0x780 lock_acquire.part.0+0xb4/0x1f0
    _raw_spin_lock+0x2f/0x40 cifs_match_super+0x101/0x320 sget+0xab/0x270 cifs_smb3_do_mount+0x1e0/0x460 smb3_get_tree+0x55/0x90 vfs_get_tree+0x46/0x180 do_new_mount+0x1b0/0x2e0 path_mount+0x6ee/0x740 do_mount+0x98/0xe0 __do_sys_mount+0x148/0x180 do_syscall_64+0xa4/0x260 entry_SYSCALL_64_after_hwframe+0x76/0x7e -> #0 (&tcp_ses->srv_lock){+.+.}-{3:3}:
    check_noncircle+0x95/0xc0 check_prev_add+0x115/0x2f0 validate_chain+0x1cf/0x270
    __lock_acquire+0x60e/0x780 lock_acquire.part.0+0xb4/0x1f0 _raw_spin_lock+0x2f/0x40 cifs_signal_cifsd_for_reconnect+0x134/0x200 __cifs_reconnect+0x8f/0x500 cifs_handle_standard+0x112/0x280 cifs_demultiplex_thread+0x64d/0xbc0 kthread+0x2f7/0x310 ret_from_fork+0x2a/0x230 ret_from_fork_asm +0x1a/0x30 其他可協助我們除錯此項目的資訊鏈結如下&tcp_ses->srv_lock
    --> &ret_buf->ses_lock --> &ret_buf->chan_lock 可能的不安全鎖定情況CPU0 CPU1 ---- ---- lock(&ret_buf->chan_lock); lock(&ret_buf->ses_lock); lock(&ret_buf->chan_lock); lock(&tcp_ses->srv_lock);
    *** DEADLOCK *** cifsd/6055 保留的 3 個鎖定 #0ffffffff857de398 (&cifs_tcp_ses_lock){+.+.}-{3:3}, at:
    cifs_signal_cifsd_for_reconnect+0x7b/0x200 #1: ffff888119c64060 (&ret_buf->ses_lock){+.+.}-{3:3}於
    cifs_signal_cifsd_for_reconnect+0x9c/0x200 #2: ffff888119c64330 (&ret_buf->chan_lock){+.+.}-{3:3}於
    cifs_signal_cifsd_for_reconnect+0xcf/0x200 (CVE-2025-38244)

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-2025-38244

medium Nessus Plugin ID 247739

版本 1.22