The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - ksmbd: fix use-after-free in __ksmbd_close_fd() via durable scavenger When a durable file handle survives     session disconnect (TCP close without SMB2_LOGOFF), session_fd_check() sets fp->conn = NULL to preserve     the handle for later reconnection. However, it did not clean up the byte-range locks on fp->lock_list.
    Later, when the durable scavenger thread times out and calls __ksmbd_close_fd(NULL, fp), the lock cleanup     loop did: spin_lock(&fp->conn->llist_lock); This caused a slab use-after-free because fp->conn was NULL     and the original connection object had already been freed by ksmbd_tcp_disconnect(). The root cause is     asymmetric cleanup: lock entries (smb_lock->clist) were left dangling on the freed conn->lock_list while     fp->conn was nulled out. To fix this issue properly, we need to handle the lifetime of smb_lock->clist     across three paths: - Safely skip clist deletion when list is empty and fp->conn is NULL. - Remove the     lock from the old connection's lock_list in session_fd_check() - Re-add the lock to the new connection's     lock_list in ksmbd_reopen_durable_fd(). (CVE-2026-31718)

Note that Nessus relies on the presence of the package as reported by the vendor.

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Linux Distros Unpatched Vulnerability : CVE-2026-31718

critical Nessus Plugin ID 311624

Version 1.4

Version 1.3

Version 1.2

Version 1.1

Version 1.4 May 10, 2026, 1:47 PM CVSS metrics ("CVSSv2 score" set to 2.1) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N") CVSSv2 severity (based on CVE-2026-31718, severity decreased from "Medium" to "Low") Detection (updated detection logic) Plugin metadata Plugin Feed: 202605101347
Version 1.3 May 8, 2026, 1:55 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202605080155
Version 1.2 May 5, 2026, 10:13 PM CVSS metrics ("CVSSv2 score" set to 6.6) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:L/AC:L/Au:N/C:N/I:C/A:C") CVSSv2 severity (based on CVE-2026-31718, severity decreased from "High" to "Medium") Detection (updated detection logic) Plugin metadata Plugin Feed: 202605052213
Version 1.1 May 2, 2026, 11:12 PM New Plugin Feed: 202605022312