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CVE-2026-80913

Unknown

Last modified

CVE-2026-80913 is a vulnerability of currently unknown severity. 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.

Description

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.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 4d0ece18e648bd4362704fd087249ac697f2b7fb; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 3938c8494d3c5d84a53fd7d1966ae9dde46cb5f8; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 4dfb997c60f7951011d3dcbee926e3a7f80d8a76; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 3161daa3f1e3ca68f8b2b8fa01720b5a8dcc6b40; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 740012aebdb8311332bf66e2aabf453ba73c2c45; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 42a7107f99d86a7524c37f108047dfa3db096ab5; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < ed901e88aa3fb3d5d7b0b52c2ee3073209df9bec; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < a93d37a09b863810653f93d371fb197457d59deb
LinuxLinux2.6.12

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-80913?
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.
How severe is CVE-2026-80913?
Severity scoring for CVE-2026-80913 is pending analysis.
How do I fix CVE-2026-80913?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST