UBUNTU-CVE-2026-23407

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix missing bounds check on DEFAULT table in verifydfa The verifydfa function only checks DEFAULTTABLE bounds when the state is not differentially encoded. When the verification loop traverses the differential encoding...

CVE-2026-23407

The CVE-2026-23407 issue affects the Linux kernel AppArmor DFA verification. The root cause is a missing bounds check on DEFAULT_TABLE in verify_dfa(), which can read k = DEFAULT_TABLE[j] as an index without validation when traversing the differential encoding chain, allowing out-of-bounds reads/...