CVE-2026-46292

Description

In the Linux kernel, the following vulnerability has been resolved: pmdomain: core: Fix detach procedure for virtual devices in genpd If a device is attached to a PM domain through genpd_dev_pm_attach_by_id(), genpd calls pm_runtime_enable() for the corresponding virtual device that it registers. While this avoids boilerplate code in drivers, there is no corresponding call to pm_runtime_disable() in genpd_dev_pm_detach(). This means these virtual devices are typically detached from its genpd, while runtime PM remains enabled for them, which is not how things are designed to work. In worst cases it may lead to critical errors, like a NULL pointer dereference bug in genpd_runtime_suspend(), which was recently reported. For another case, we may end up keeping an unnecessary vote for a performance state for the device. To fix these problems, let's add this missing call to pm_runtime_disable() in genpd_dev_pm_detach().

Gravité et risque d'exploitation

CVE-2026-46292 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 0.12 %, ce qui la place devant 1.8 % des CVE référencées.

Que faire ?

• Vérifiez si Linux (versions <=6.1.*, 7.0.7, <=7.0.*, <=6.12.*, 0, <98b8104978474d381256a2b2fb0e7ca8e05a7bfa, <8d44391a7f29e4601e8243f13498d0219bab2576, 6.1.176, 5.15.210, 6.12.88, <=5.10.*, <e8f8dad44f024a5c99e54a48ad5c943fa8e54319, 3c095f32a92be4d07f3172a777dab1aacdb6a728, <361518a26e4434e879db6ff43bf364795dcbfbff, <=6.6.*, 6.6.141, 7.1, <52e485ed0dcb5496864003ba9ffcef7d5b613f83, <51a7dd9cbae9210335ce398642ecaaa52c939eb5, <=6.18.*, <707cb5df3eab32ddc52979418f7ace62941e6381, <4.18, 4.18, <=*, <=5.15.*, 6.18.30, <26735dfdd8930d9ef1fa92e590a9bf77726efdf6, 5.10.259) 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/e8f8dad44f024a5c99e54a48ad5c943fa8e54319
• https://git.kernel.org/stable/c/98b8104978474d381256a2b2fb0e7ca8e05a7bfa
• https://git.kernel.org/stable/c/52e485ed0dcb5496864003ba9ffcef7d5b613f83
• https://git.kernel.org/stable/c/707cb5df3eab32ddc52979418f7ace62941e6381
• https://git.kernel.org/stable/c/361518a26e4434e879db6ff43bf364795dcbfbff
• https://git.kernel.org/stable/c/51a7dd9cbae9210335ce398642ecaaa52c939eb5
• https://git.kernel.org/stable/c/8d44391a7f29e4601e8243f13498d0219bab2576
• https://git.kernel.org/stable/c/26735dfdd8930d9ef1fa92e590a9bf77726efdf6