CVE-2026-43150

Description

In the Linux kernel, the following vulnerability has been resolved: perf/arm-cmn: Reject unsupported hardware configurations So far we've been fairly lax about accepting both unknown CMN models (at least with a warning), and unknown revisions of those which we do know, as although things do frequently change between releases, typically enough remains the same to be somewhat useful for at least some basic bringup checks. However, we also make assumptions of the maximum supported sizes and numbers of things in various places, and there's no guarantee that something new might not be bigger and lead to nasty array overflows. Make sure we only try to run on things that actually match our assumptions and so will not risk memory corruption. We have at least always failed on completely unknown node types, so update that error message for clarity and consistency too.

Gravité et risque d'exploitation

CVE-2026-43150 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 0.18 %, ce qui la place devant 6.7 % des CVE référencées.

Que faire ?

• Vérifiez si Linux (versions <=6.1.*, <=6.12.*, <6.5, 0, <00d69f21ef2ab00e6156c764d89e2b3539eb2f33, <6.1.165, 7.0, 6.1.63, 6.1.165, 6.12.75, 6.5, <=6.6.*, <=6.19.*, <7e2c200010aa93fa78201da959b4ac6b9f8fed0b, <a251d866f50b6a4c95901fa722025065679c2eca, <=6.18.*, <d3e837e11ee9ed08df229272319199003ba00379, 28fa550a49e818d6445e787f584759b1bf21d9d4, <36c0de02575ce59dfd879eb4ef63d53a68bbf9ce, 6.19.6, 6.6.128, 6.18.16, <=*, 7819e05a0dceac20c5ff78ec9b252faf3b76b824, <08c7eadd8a934a1968e1aeeee8b61b853b99fb3a) 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/7e2c200010aa93fa78201da959b4ac6b9f8fed0b
• https://git.kernel.org/stable/c/d3e837e11ee9ed08df229272319199003ba00379
• https://git.kernel.org/stable/c/00d69f21ef2ab00e6156c764d89e2b3539eb2f33
• https://git.kernel.org/stable/c/08c7eadd8a934a1968e1aeeee8b61b853b99fb3a
• https://git.kernel.org/stable/c/a251d866f50b6a4c95901fa722025065679c2eca
• https://git.kernel.org/stable/c/36c0de02575ce59dfd879eb4ef63d53a68bbf9ce