CVE-2026-43316

Description

In the Linux kernel, the following vulnerability has been resolved: media: solo6x10: Check for out of bounds chip_id Clang with CONFIG_UBSAN_SHIFT=y noticed a condition where a signed type (literal "1" is an "int") could end up being shifted beyond 32 bits, so instrumentation was added (and due to the double is_tw286x() call seen via inlining), Clang decides the second one must now be undefined behavior and elides the rest of the function[1]. This is a known problem with Clang (that is still being worked on), but we can avoid the entire problem by actually checking the existing max chip ID, and now there is no runtime instrumentation added at all since everything is known to be within bounds. Additionally use an unsigned value for the shift to remove the instrumentation even without the explicit bounds checking. [hverkuil: fix checkpatch warning for is_tw286x]

Gravité et risque d'exploitation

CVE-2026-43316 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 0.16 %, ce qui la place devant 5.1 % des CVE référencées.

Que faire ?

• Vérifiez si Linux (versions <=6.1.*, <=6.12.*, <0b3dadada2417782a63ce32dae05bafe1c949e3f, 0, <603e3859393ee2ce91393b7d05e6e56e4b66e5cd, 7.0, 2.6.36, 6.1.165, 6.12.75, <=5.10.*, <=6.6.*, <=6.19.*, <=6.18.*, <2.6.36, 6.19.6, 6.6.128, <5849ae68d7b8b6ad55cc1bf0d227dd2ae6362528, 5.10.252, <c327192ca26670cf6e588c1eeda66cd2fa97630e, 6.18.16, <=*, <=5.15.*, <0fdf6323c35a134f206dcad5babb4ff488552076, <d29f33b2cf98e4901cd5457d1ee34062e808df73, <33af366211ee78e3b074ff44a16121e537e86826, <4d6db0c6bbbfd8d7bbdbf7ab6a9c003752abf116, 5.15.202, faa4fd2a09517b39cc1f5d622453f97a59acfdac) 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/c327192ca26670cf6e588c1eeda66cd2fa97630e
• https://git.kernel.org/stable/c/0b3dadada2417782a63ce32dae05bafe1c949e3f
• https://git.kernel.org/stable/c/603e3859393ee2ce91393b7d05e6e56e4b66e5cd
• https://git.kernel.org/stable/c/33af366211ee78e3b074ff44a16121e537e86826
• https://git.kernel.org/stable/c/5849ae68d7b8b6ad55cc1bf0d227dd2ae6362528
• https://git.kernel.org/stable/c/d29f33b2cf98e4901cd5457d1ee34062e808df73
• https://git.kernel.org/stable/c/4d6db0c6bbbfd8d7bbdbf7ab6a9c003752abf116
• https://git.kernel.org/stable/c/0fdf6323c35a134f206dcad5babb4ff488552076