Linux Kernel SELinux: Allow NULL boolean deref via unsized bool array
CVE-2026-80913 Published on September 4, 2026
selinux: require every boolean value to be defined
In the Linux kernel, the following vulnerability has been resolved:
selinux: require every boolean value to be defined
p_bools.nprim comes from the policy image independently of how many
booleans follow it, and cond_index_bool() fills bool_val_to_struct[] at
value - 1, so a count larger than the values present leaves NULL entries.
Every user of that array then walks it by index and dereferences each
entry: cond_evaluate_expr() on the access-vector path,
security_get_bools() and security_get_bool_value() behind selinuxfs, and
security_set_bools(). A sparse class value is absorbed by
policydb_class_isvalid() and its siblings; booleans have no such
predicate, and no consumer that could use one.
Reject a boolean value that no boolean defines, once, where the array is
built. Conforming policies define every boolean they declare and are
unaffected.
Products Associated with CVE-2026-80913
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Affected Versions
Linux:- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 4d0ece18e648bd4362704fd087249ac697f2b7fb is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 3938c8494d3c5d84a53fd7d1966ae9dde46cb5f8 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 4dfb997c60f7951011d3dcbee926e3a7f80d8a76 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 3161daa3f1e3ca68f8b2b8fa01720b5a8dcc6b40 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 740012aebdb8311332bf66e2aabf453ba73c2c45 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 42a7107f99d86a7524c37f108047dfa3db096ab5 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below ed901e88aa3fb3d5d7b0b52c2ee3073209df9bec is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below a93d37a09b863810653f93d371fb197457d59deb is affected.
- Version 2.6.12 is affected.
- Before 2.6.12 is unaffected.
- Version 5.10.266, <= 5.10.* is unaffected.
- Version 5.15.217, <= 5.15.* is unaffected.
- Version 6.1.184, <= 6.1.* is unaffected.
- Version 6.6.153, <= 6.6.* is unaffected.
- Version 6.12.105, <= 6.12.* is unaffected.
- Version 6.18.46, <= 6.18.* is unaffected.
- Version 7.1.10, <= 7.1.* is unaffected.
- Version 7.2, <= * is unaffected.