CVE-2026-80755
CVE CVE-2026-80755EUVD EUVD-2026-70359Published 2026-09-03T08:26:33.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: 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]
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 0; 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 <6c2ab7c4549f4f2305848df834e784651dbf1676; 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 <d14b5d0e97fccd27974fedc03b903408872907fd; 2.6.23; patch: 6.18.49; patch: 7.1.13; patch: 6.12.108; 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 <a7f3d4f22d920dc3c7d75f02ece0f7bf2c58437e; patch: 7.2; 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 <dfc59a062c386d3d4415ecdab781065a645f33cc
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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