CVE-2026-89946ASoC: cs35l33: drain threaded IRQ before runtime suspend
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8 before d07799302721d381aef834fac8a11d196894eccb; 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8 builds before 5b5311427e54d9c0d07178ee42df68ba44c2d5ca; from 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8 before a04722542c76ce861031384480825afded8cc4f4; 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8 builds before 614c2616ea677abfbed917a92bdc5141efff3536; 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8 builds before 6ae98918240585eb2ad32b097c4810f4e2dabe88; 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8 builds before 6e369bc46663b4bfce3d5f8b8ed08e71ecea13a2; 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8 builds before 84cf6acd01a1ec8f30276578a039216327af782e; from 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8 before e074c12c428c633e079154301207a6079a208583 | CNA record |
References
- 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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.