CVE-2026-46177

Description

In the Linux kernel, the following vulnerability has been resolved: ipmi: Add limits to event and receive message requests The driver would just fetch events and receive messages until the BMC said it was done. To avoid issues with BMCs that never say they are done, add a limit of 10 fetches at a time. In addition, an si interface has an attn state it can return from the hardware which is supposed to cause a flag fetch to see if the driver needs to fetch events or message or a few other things. If the attn bit gets stuck, it's a similar problem. So allow messages in between flag fetches so the driver itself doesn't get stuck. This is a more general fix than the previous fix for the specific bad BMC, but should fix the more general issue of a BMC that won't stop saying it has data. This has been there from the beginning of the driver. It's not a bug per-se, but it is accounting for bugs in BMCs.

Gravité et risque d'exploitation

CVE-2026-46177 obtient un score CVSS de 7.5/10, soit une gravité élevée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.81 %, ce qui la place devant 56.0 % des CVE référencées.

Que faire ?

• Vérifiez si Linux (versions <=6.1.*, 7.0.7, <=7.0.*, <=6.12.*, <112df8e631636cafda64dcee4561daf09ce74a4a, <c024167fb00489baee08c72182ca2e7dc5fb9f20, 2.6.12, <3d37d2165df9504ea99d9e6181552dc4d2d1ab37, 0, <304b56883b7eff73eb606c35d062c8101aaf5471, <c4cca236968683eb0d59abfb12d5c7e4d8514227, <67c44e0deba936d5edaebea356b4589eb43acb5c, <9059dc94421e1d4f8e5844204608b37ebfddb3da, <2.6.12, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, 6.12.88, 5.15.209, <=5.10.*, <=6.6.*, 6.1.175, 7.1, <=6.18.*, <e20212b431bef217d3886b86bbc90cc3ed00de68, 5.10.258, <=*, <=5.15.*, 6.6.140, 6.18.30) 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/112df8e631636cafda64dcee4561daf09ce74a4a
• https://git.kernel.org/stable/c/304b56883b7eff73eb606c35d062c8101aaf5471
• https://git.kernel.org/stable/c/9059dc94421e1d4f8e5844204608b37ebfddb3da
• https://git.kernel.org/stable/c/67c44e0deba936d5edaebea356b4589eb43acb5c
• https://git.kernel.org/stable/c/e20212b431bef217d3886b86bbc90cc3ed00de68
• https://git.kernel.org/stable/c/3d37d2165df9504ea99d9e6181552dc4d2d1ab37
• https://git.kernel.org/stable/c/c024167fb00489baee08c72182ca2e7dc5fb9f20
• https://git.kernel.org/stable/c/c4cca236968683eb0d59abfb12d5c7e4d8514227