apparmor: validate DFA start states are in bounds in unpack_pdb (Linux Linux)

CVE-2026-23269
HIGH 7.1

En bref

Source
NVD
EPSS
EPSS 0.14 % · centile 3 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: apparmor: validate DFA start states are in bounds in unpack_pdb Start states are read from untrusted data and used as indexes into the DFA state tables. The aa_dfa_next() function call in unpack_pdb() will access dfa->tables[YYTD_ID_BASE][start], and if the start state exceeds the number of states in the DFA, this results in an out-of-bound read. ================================================================== BUG: KASAN: slab-out-of-bounds in aa_dfa_next+0x2a1/0x360 Read of size 4 at addr ffff88811956fb90 by task su/1097 ... Reject policies with out-of-bounds start states during unpacking to prevent the issue.

Faiblesses (CWE)

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HLinux
CVSS 3.1HIGH 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected ad5ff3db53c68c2f12936bc74ea5dfe0af943592 < f43eea8ae0102ea198da211ef7f5ce83725ecf19 ; affected ad5ff3db53c68c2f12936bc74ea5dfe0af943592 < 5487871b2b56c19d26936ed6fdc62652b30941df ; affected ad5ff3db53c68c2f12936bc74ea5dfe0af943592 < 5443c027ec16afa55b1b8a3e7a1ab2ea3c77767a ; affected ad5ff3db53c68c2f12936bc74ea5dfe0af943592 < 07cf6320f40ea2ccfad63728cff34ecb309d03da ; affected ad5ff3db53c68c2f12936bc74ea5dfe0af943592 < 15c3eb8916e7db01cb246d04a1fe6f0fdc065b0c ; affected ad5ff3db53c68c2f12936bc74ea5dfe0af943592 < 0baadb0eece2c4d939db10d3c323b4652ac79a58
Linux · Linuxaffected 3.4 ; unaffected 0 < 3.4 ; unaffected 5.10.253 ≤ 5.10.* ; unaffected 5.15.203 ≤ 5.15.* ; unaffected 6.1.169 ≤ 6.1.* ; unaffected 6.6.130 ≤ 6.6.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD