CVE-2026-80755

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]

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/6c2ab7c4549f4f2305848df834e784651dbf1676
https://git.kernel.org/stable/c/a7f3d4f22d920dc3c7d75f02ece0f7bf2c58437e
https://git.kernel.org/stable/c/d14b5d0e97fccd27974fedc03b903408872907fd
https://git.kernel.org/stable/c/dfc59a062c386d3d4415ecdab781065a645f33cc

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-03 13:06

Updated : 2026-09-03 13:06

NVD link : CVE-2026-80755

Mitre link : CVE-2026-80755

CVE.ORG link : CVE-2026-80755

JSON object : View

Products Affected

No product.

CWE

No CWE.

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