CVE-2026-80757selinux: reject a class permission count below its inherited common
Updated under an hour ago ()
Does this affect you?
It affects Linux. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
In the Linux kernel, the following vulnerability has been resolved: selinux: reject a class permission count below its inherited common security_get_permissions() maps an inherited common's permissions into an array sized by the class's own permissions.nprim, but class_read() takes that nprim verbatim from the policy image and never checks that it covers the common. A class that inherits a common of N permissions while declaring a smaller nprim is accepted, and on load the common's permissions are written past the class-sized array -- an out-of-bounds heap write. Reject a class whose permission count is below its inherited common's. Well-formed policies, where the class count already includes the inherited permissions, are unaffected.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 3, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 before 2002ff745db64ac83ee1bb9ff78196d2d68bfdb3; 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 builds before 38d91446630a20ce8c2a981810deea81fd61a3b5; from 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 before 638213f2e6ea52c06a25861616781338d154db35; 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 builds before 2b7ffd7921fcbfe408fb7b372e47454e45b1e6a7; from 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 before a63011c009ea79439b800a05602b880eb4adbb05; from 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 before acd5b09be98fd38b7392307880156fb0452a7276; 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 builds before 1b995966c3ae5244751bdaee9bfe7e17567d4fbe; 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 builds before 9a82dcd98b6e6e11cfd162410967951f12152528 | CNA record |
References
- https://git.kernel.org/stable/c/2002ff745db64ac83ee1bb9ff78196d2d68bfdb3
- https://git.kernel.org/stable/c/38d91446630a20ce8c2a981810deea81fd61a3b5
- https://git.kernel.org/stable/c/638213f2e6ea52c06a25861616781338d154db35
- https://git.kernel.org/stable/c/2b7ffd7921fcbfe408fb7b372e47454e45b1e6a7
- https://git.kernel.org/stable/c/a63011c009ea79439b800a05602b880eb4adbb05
- https://git.kernel.org/stable/c/acd5b09be98fd38b7392307880156fb0452a7276
- https://git.kernel.org/stable/c/1b995966c3ae5244751bdaee9bfe7e17567d4fbe
- https://git.kernel.org/stable/c/9a82dcd98b6e6e11cfd162410967951f12152528
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.