CVE-2026-89946
Vulnérabilité non évaluée dans Linux (Linux)
Description
In the Linux kernel, the following vulnerability has been resolved: ASoC: cs35l33: drain threaded IRQ before runtime suspend cs35l33_runtime_suspend() currently switches the codec into regcache_cache_only(true) and powers it down without first quiescing the threaded IRQ registered by devm_request_threaded_irq(). That leaves a window where cs35l33_irq_thread() can still run after suspend has closed off live register access. A running system can reach this during runtime PM while the driver still has critical fault IRQs unmasked. If the threaded handler runs in that window, it reads volatile INT_STATUS_1/2 after cache_only has been enabled, ignores the regmap_read() failures, and can still drive the AMP_SHORT_RLS, CAL_ERR_RLS, OTE_RLS, and OTW_RLS release paths. Use disable_irq() before entering cache_only/power-off so any in-flight threaded handler is drained and no new IRQ thread can run during the suspended state. Re-enable the IRQ only after runtime_resume() has restored live register access with regcache_sync(). Since probe only warns if devm_request_threaded_irq() fails, track whether the IRQ was actually installed before disabling or re-enabling it.
Gravité et risque d'exploitation
CVE-2026-89946 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 0.21 %, ce qui la place devant 10.6 % des CVE référencées.
Que faire ?
- Vérifiez si Linux (versions <=6.1.*, <=6.12.*, 5.15.221, <5b5311427e54d9c0d07178ee42df68ba44c2d5ca, 5.10.270, 0, <6ae98918240585eb2ad32b097c4810f4e2dabe88, <6e369bc46663b4bfce3d5f8b8ed08e71ecea13a2, 6.1.188, 6.18.51, <d07799302721d381aef834fac8a11d196894eccb, 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8, <=5.10.*, <=6.6.*, 7.2.5, 6.6.157, <a04722542c76ce861031384480825afded8cc4f4, <614c2616ea677abfbed917a92bdc5141efff3536, <=6.18.*, <e074c12c428c633e079154301207a6079a208583, 6.12.110, <=7.2.*, 4.8, <=*, <84cf6acd01a1ec8f30276578a039216327af782e, <=5.15.*, <4.8, 7.3) 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/d07799302721d381aef834fac8a11d196894eccb
- https://git.kernel.org/stable/c/5b5311427e54d9c0d07178ee42df68ba44c2d5ca
- https://git.kernel.org/stable/c/a04722542c76ce861031384480825afded8cc4f4
- https://git.kernel.org/stable/c/614c2616ea677abfbed917a92bdc5141efff3536
- https://git.kernel.org/stable/c/6ae98918240585eb2ad32b097c4810f4e2dabe88
- https://git.kernel.org/stable/c/6e369bc46663b4bfce3d5f8b8ed08e71ecea13a2
- https://git.kernel.org/stable/c/84cf6acd01a1ec8f30276578a039216327af782e
- https://git.kernel.org/stable/c/e074c12c428c633e079154301207a6079a208583
