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

  - In the Linux kernel, the following vulnerability has been resolved: Revert openvswitch: switch to per-     action label counting in conntrack Currently, ovs_ct_set_labels() is only called for confirmed conntrack     entries (ct) within ovs_ct_commit(). However, if the conntrack entry does not have the labels_ext     extension, attempting to allocate it in ovs_ct_get_conn_labels() for a confirmed entry triggers a warning     in nf_ct_ext_add(): WARN_ON(nf_ct_is_confirmed(ct)); This happens when the conntrack entry is created     externally before OVS increments net->ct.labels_used. The issue has become more likely since commit     fcb1aa5163b1 (openvswitch: switch to per-action label counting in conntrack), which changed to use per-     action label counting and increment net->ct.labels_used when a flow with ct action is added. Since there's     no straightforward way to fully resolve this issue at the moment, this reverts the commit to avoid     breaking existing use cases. (CVE-2025-21958)

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

Detections

Analytics

Linux Distros Unpatched Vulnerability : CVE-2025-21958

medium Nessus Plugin ID 244262

Version 1.5

Version 1.4

Version 1.3

Version 1.2

Version 1.1

Version 1.5 Jul 18, 2026, 3:00 PM Detection (updated detection logic) Plugin Feed: 202607181500
Version 1.4 Jun 28, 2026, 2:21 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202606281421
Version 1.3 Nov 14, 2025, 5:01 PM CVSS metrics ("CVSSv3 score" set to 4.7) CVSS metrics ("CVSSv3 vector" set to "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H") CVSS temporal metrics ("CVSSv2 temporal vector" set to "CVSS2#E:U/RL:U/RC:C") CVSS temporal metrics ("CVSSv3 temporal vector" set to "CVSS:3.0/E:U/RL:U/RC:C") CVSSv3 severity (based on None, severity decreased from "High" to "Medium") Detection (updated detection logic) Plugin metadata Plugin Feed: 202511141701
Version 1.2 Sep 2, 2025, 6:30 AM CVSS metrics ("Cvssv4 score" set to 0.0) CVSSv2 severity (based on None, severity decreased from "High" to "Low") Detection (updated detection logic) Plugin metadata Plugin Feed: 202509020630
Version 1.1 Aug 7, 2025, 10:03 AM New Plugin Feed: 202508071003