CVE-2026-46051

Description

In the Linux kernel, the following vulnerability has been resolved: md/raid5: fix soft lockup in retry_aligned_read() When retry_aligned_read() encounters an overlapped stripe, it releases the stripe via raid5_release_stripe() which puts it on the lockless released_stripes llist. In the next raid5d loop iteration, release_stripe_list() drains the stripe onto handle_list (since STRIPE_HANDLE is set by the original IO), but retry_aligned_read() runs before handle_active_stripes() and removes the stripe from handle_list via find_get_stripe() -> list_del_init(). This prevents handle_stripe() from ever processing the stripe to resolve the overlap, causing an infinite loop and soft lockup. Fix this by using __release_stripe() with temp_inactive_list instead of raid5_release_stripe() in the failure path, so the stripe does not go through the released_stripes llist. This allows raid5d to break out of its loop, and the overlap will be resolved when the stripe is eventually processed by handle_stripe().

Gravité et risque d'exploitation

CVE-2026-46051 obtient un score CVSS de 0.0/10, soit une gravité non évaluée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.13 %, ce qui la place devant 2.2 % des CVE référencées.

Que faire ?

• Vérifiez si Linux (versions 7.0.4, <=6.1.*, <=7.0.*, <=6.12.*, 0, 6.18.27, 3.12, <09880592f5a9dc73377d6eb5ac123537b5f8df49, <66df9f30673db66ac35145820a8e24906069ae57, 5.15.209, <=5.10.*, <=6.6.*, 6.1.175, <4166d5234fe8b6c3c7f796a6c198605356c5b355, <1985cb3247e87ff6b8ca4bc5f9626f4f51024507, <80fc6ca2cbde018d52e13f305edcd643911bd94b, <a9055300e07d9d6800264d3c2560e1d0144689ca, 7.1, <=6.18.*, 5.10.258, 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6, <3.12, <7f9f7c697474268d9ef9479df3ddfe7cdcfbbffc, <=*, <=5.15.*, 6.6.140, 6.12.86, <883cc33b7af1c448663287f069ef9dfea001e90f) 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/66df9f30673db66ac35145820a8e24906069ae57
• https://git.kernel.org/stable/c/4166d5234fe8b6c3c7f796a6c198605356c5b355
• https://git.kernel.org/stable/c/a9055300e07d9d6800264d3c2560e1d0144689ca
• https://git.kernel.org/stable/c/09880592f5a9dc73377d6eb5ac123537b5f8df49
• https://git.kernel.org/stable/c/80fc6ca2cbde018d52e13f305edcd643911bd94b
• https://git.kernel.org/stable/c/1985cb3247e87ff6b8ca4bc5f9626f4f51024507
• https://git.kernel.org/stable/c/883cc33b7af1c448663287f069ef9dfea001e90f
• https://git.kernel.org/stable/c/7f9f7c697474268d9ef9479df3ddfe7cdcfbbffc