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.
Metrics
No CVSS score has been published yet.
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8, < d07799302721d381aef834fac8a11d196894eccb; >= 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8, < 5b5311427e54d9c0d07178ee42df68ba44c2d5ca; >= 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8, < a04722542c76ce861031384480825afded8cc4f4; >= 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8, < 614c2616ea677abfbed917a92bdc5141efff3536; >= 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8, < 6ae98918240585eb2ad32b097c4810f4e2dabe88; >= 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8, < 6e369bc46663b4bfce3d5f8b8ed08e71ecea13a2; >= 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8, < 84cf6acd01a1ec8f30276578a039216327af782e; >= 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8, < e074c12c428c633e079154301207a6079a208583 |
| Linux | Linux | 4.8 |
References
- https://git.kernel.org/stable/c/5b5311427e54d9c0d07178ee42df68ba44c2d5ca
- 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/a04722542c76ce861031384480825afded8cc4f4
- https://git.kernel.org/stable/c/d07799302721d381aef834fac8a11d196894eccb
- https://git.kernel.org/stable/c/e074c12c428c633e079154301207a6079a208583
Timeline
- Published
- Sep 16, 2026
- Last modified
- Oct 19, 2026
- NVD status
- Received