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

  - l2tp: pppol2tp: hold reference to session in pppol2tp_ioctl() pppol2tp_ioctl() read sock->sk->sk_user_data     directly without any locks or reference counting. If a controllable sleep was induced during     copy_from_user() (e.g. via a userfaultfd page fault sleep), a concurrent socket close could trigger     pppol2tp_session_close() asynchronously. This frees the l2tp_session structure via the     l2tp_session_del_work workqueue. Upon resuming, the ioctl thread dereferences the stale session pointer,     resulting in a Use-After-Free (UAF). Fix this by securely fetching the session reference using the RCU-     safe, refcounted helper pppol2tp_sock_to_session(sk) on entry. This locks the session's refcount across     the sleep. We structured the function to exit via standard err breaks, guaranteeing that     l2tp_session_put() is cleanly called on all return paths to drop the reference. To preserve existing     behavior we validate the session and its magic signature only for the specific L2TP commands that require     it. This ensures that generic/unknown ioctls called on an unconnected socket still return -ENOIOCTLCMD and     correctly fall back to generic handlers (e.g. in sock_do_ioctl()). (CVE-2026-53262)

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Linux Distros Unpatched Vulnerability : CVE-2026-53262

high Nessus Plugin ID 323405

Version 1.5

Version 1.4

Version 1.3

Version 1.2

Version 1.1

Version 1.5 Jul 15, 2026, 7:54 AM Detection (updated detection logic) Plugin Feed: 202607150754
Version 1.4 Jul 10, 2026, 10:18 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202607101018
Version 1.3 Jul 7, 2026, 11:10 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202607071110
Version 1.2 Jul 2, 2026, 3:38 PM Detection (updated detection logic) Plugin Feed: 202607021538
Version 1.1 Jun 28, 2026, 2:21 PM New Plugin Feed: 202606281421