CVE-2026-23411
Vulnérabilité élevée dans Linux (Linux)
Description
In the Linux kernel, the following vulnerability has been resolved: apparmor: fix race between freeing data and fs accessing it AppArmor was putting the reference to i_private data on its end after removing the original entry from the file system. However the inode can aand does live beyond that point and it is possible that some of the fs call back functions will be invoked after the reference has been put, which results in a race between freeing the data and accessing it through the fs. While the rawdata/loaddata is the most likely candidate to fail the race, as it has the fewest references. If properly crafted it might be possible to trigger a race for the other types stored in i_private. Fix this by moving the put of i_private referenced data to the correct place which is during inode eviction.
Gravité et risque d'exploitation
CVE-2026-23411 obtient un score CVSS de 7.8/10, soit une gravité élevée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.14 %, ce qui la place devant 3.3 % des CVE référencées.
Que faire ?
- Vérifiez si Linux (versions <=6.1.*, <=6.12.*, 0, 7.0, <eecce026399917f6efa532c56bc7a3e9dd6ee68b, <=5.10.*, <=6.6.*, <=6.19.*, 6.1.169, <667df93769c02ff581c77d2d8f162147e719c557, 4.13, <8e135b8aee5a06c52a4347a5a6d51223c6f36ba3, 5.15.203, 6.18.18, <=6.18.*, <4.13, <2a732ed26fbd048e7925d227af8cf9ea43fb5cc9, <=*, <13bc2772414d68e94e273dea013181a986948ddf, 5.10.253, <=5.15.*, <a92c5e5086a87d082696245a8607666da3d80554, c961ee5f21b202dea60b63eeef945730d92e46a6, 6.12.77, 6.19.8, <ae10787d955fb255d381e0d5589451dd72c614b1, 6.6.130, <3ddb961d2929bbb3204a2bba21b5d8153cd3f7cc) est présent sur votre parc.
- Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
- À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
- Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.
Références
- https://git.kernel.org/stable/c/a92c5e5086a87d082696245a8607666da3d80554
- https://git.kernel.org/stable/c/667df93769c02ff581c77d2d8f162147e719c557
- https://git.kernel.org/stable/c/3ddb961d2929bbb3204a2bba21b5d8153cd3f7cc
- https://git.kernel.org/stable/c/ae10787d955fb255d381e0d5589451dd72c614b1
- https://git.kernel.org/stable/c/eecce026399917f6efa532c56bc7a3e9dd6ee68b
- https://git.kernel.org/stable/c/13bc2772414d68e94e273dea013181a986948ddf
- https://git.kernel.org/stable/c/2a732ed26fbd048e7925d227af8cf9ea43fb5cc9
- https://git.kernel.org/stable/c/8e135b8aee5a06c52a4347a5a6d51223c6f36ba3