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

  - selinux: reject a permission value exceeding the class permission count perm_read() bounds a permission     value by SEL_VEC_MAX but never by the nprim of the owning class or common, which is taken verbatim from     the policy image. security_get_permissions() then writes perms[value - 1] into an nprim-sized kcalloc()     array, so a class declaring fewer permissions than its largest permission value drives an out-of-bounds     heap write. The top-level symbol tables are validated this way; the nested per-class permission table is     not. Reject a permission whose value exceeds nprim, which is already set when perm_read() runs. Well-     formed policies are unaffected. [PM: tweak comment for line length] (CVE-2026-80755)

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

Detections

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Linux Distros Unpatched Vulnerability : CVE-2026-80755

high Nessus Plugin ID 342730

Version 1.4

Version 1.3

Version 1.2

Version 1.1

Version 1.4 Sep 23, 2026, 1:21 PM Detection (updated detection logic) Plugin Feed: 202609231321
Version 1.3 Sep 11, 2026, 11:01 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202609111101
Version 1.2 Sep 5, 2026, 1:14 PM CVSS metrics ("CVSSv2 score" set to 6.4) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:L/AC:L/Au:S/C:C/I:P/A:C") CVSS metrics ("CVSSv3 score" set to 7.1) CVSS metrics ("CVSSv3 vector" set to "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H") CVSSv2 severity (based on CVE-2026-80755, severity decreased from "High" to "Medium") Detection (updated detection logic) Plugin metadata Plugin Feed: 202609051314
Version 1.1 Sep 4, 2026, 7:34 AM New Plugin Feed: 202609040734