apparmor: fix: limit the number of levels of policy namespaces (Linux Linux)

CVE-2026-23405
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.18 % · centile 8 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix: limit the number of levels of policy namespaces Currently the number of policy namespaces is not bounded relying on the user namespace limit. However policy namespaces aren't strictly tied to user namespaces and it is possible to create them and nest them arbitrarily deep which can be used to exhaust system resource. Hard cap policy namespaces to the same depth as user namespaces.

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected c88d4c7b049e87998ac0a9f455aa545cc895ef92 < 6b396cc2f0365e684fc1d3547d18ef79fcee225d ; affected c88d4c7b049e87998ac0a9f455aa545cc895ef92 < 87d0cecc900e55d55fc4dbfb43ac93e269c7a5b3 ; affected c88d4c7b049e87998ac0a9f455aa545cc895ef92 < b1226e37eb3754d389721c135db6107db94c7a72 ; affected c88d4c7b049e87998ac0a9f455aa545cc895ef92 < 3f8699b3ee0c04b4b9bc27b82cd89a40e81e1d2e ; affected c88d4c7b049e87998ac0a9f455aa545cc895ef92 < 853ce31ca72097d23991a06876a2ccb5cb64b603 ; affected c88d4c7b049e87998ac0a9f455aa545cc895ef92 < d42b2b6bb77ca40ee34ab74ad79305840b5f315d
Linux · Linuxaffected 2.6.36 ; unaffected 0 < 2.6.36 ; 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