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

  - nsfs: tighten permission checks for ns iteration ioctls Even privileged services should not necessarily be     able to see other privileged service's namespaces so they can't leak information to each other. Use     may_see_all_namespaces() helper that centralizes this policy until the nstree adapts. (CVE-2026-43403)

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

Detections

Analytics

Linux Distros Unpatched Vulnerability : CVE-2026-43403

high Nessus Plugin ID 313431

Version 1.5

Version 1.3

Version 1.2

Version 1.1

Version 1.5 May 25, 2026, 10:30 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202605252230
Version 1.3 May 14, 2026, 3:47 AM CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N") Detection (updated detection logic) Plugin metadata Plugin Feed: 202605140347
Version 1.2 May 12, 2026, 8:32 AM CVSS metrics ("CVSSv3 score" set to 8.8) CVSS metrics ("CVSSv3 vector" set to "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H") CVSSv3 severity (based on None, severity increased from "Medium" to "High") Plugin Feed: 202605120832
Version 1.1 May 9, 2026, 8:04 AM New Plugin Feed: 202605090804