{"cve":"CVE-2026-23269","nvd":{"published":"2026-03-18T18:16:25.907","modified":"2026-06-17T10:21:13.413","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: validate DFA start states are in bounds in unpack_pdb\n\nStart states are read from untrusted data and used as indexes into the\nDFA state tables. The aa_dfa_next() function call in unpack_pdb() will\naccess dfa->tables[YYTD_ID_BASE][start], and if the start state exceeds\nthe number of states in the DFA, this results in an out-of-bound read.\n\n==================================================================\n BUG: KASAN: slab-out-of-bounds in aa_dfa_next+0x2a1/0x360\n Read of size 4 at addr ffff88811956fb90 by task su/1097\n ...\n\nReject policies with out-of-bounds start states during unpacking\nto prevent the issue.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","score":7.1},"cwes":["CWE-125"],"references":["https://git.kernel.org/stable/c/07cf6320f40ea2ccfad63728cff34ecb309d03da","https://git.kernel.org/stable/c/0baadb0eece2c4d939db10d3c323b4652ac79a58","https://git.kernel.org/stable/c/15c3eb8916e7db01cb246d04a1fe6f0fdc065b0c","https://git.kernel.org/stable/c/3bb7db43e32190c973d4019037cedb7895920184","https://git.kernel.org/stable/c/5443c027ec16afa55b1b8a3e7a1ab2ea3c77767a"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:26:19.218427112+00:00"},"epss":{"cve":"CVE-2026-23269","score":0.00136,"percentile":0.0299,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}