ASoC: cs35l34: drain threaded IRQ before runtime suspend

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-89945
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-16 11:17:04 UTC
Updated2026-09-16 11:17:04 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: ASoC: cs35l34: drain threaded IRQ before runtime suspend cs35l34_runtime_suspend() currently switches the codec into regcache_cache_only(true), asserts reset low, and powers the device off without first quiescing the threaded IRQ registered by devm_request_threaded_irq(). That leaves a window where cs35l34_irq_thread() can still run after suspend has removed live hardware 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..4 after cache_only has been enabled, ignores the regmap_read() failures, and can still execute the PROT_RELEASE_CTL release sequence or the BST fault power-down writes. Use disable_irq() before entering cache_only/reset-low/power-off so any in-flight threaded handler is drained and no new IRQ thread can run while the device is suspended. Re-enable the IRQ only after runtime_resume() has restored live register access with regcache_sync(). Since probe only logs request_threaded_irq() failures and keeps going, track whether the IRQ was actually installed before disabling or re-enabling it.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected c1124c09e1035cabdbc17d4538ae6f922086fec9 3be8380fb14d602cd833e5852e6d83c1e7eb1ceb git Not specified
CNA Linux Linux affected c1124c09e1035cabdbc17d4538ae6f922086fec9 96982734e765c13c3db02067e1d5784682085f5c git Not specified
CNA Linux Linux affected c1124c09e1035cabdbc17d4538ae6f922086fec9 5b063739619990d5de0c94c85d6e5be14e7cbdfe git Not specified
CNA Linux Linux affected c1124c09e1035cabdbc17d4538ae6f922086fec9 f4bfd755c52dfa7584e6c9374206b71b8895c997 git Not specified
CNA Linux Linux affected c1124c09e1035cabdbc17d4538ae6f922086fec9 4fe8a91a9266f1321c2d31ce67940a4e8b93559e git Not specified
CNA Linux Linux affected c1124c09e1035cabdbc17d4538ae6f922086fec9 5a4fe7a87841af23ba80bae31b80355b16926cf4 git Not specified
CNA Linux Linux affected c1124c09e1035cabdbc17d4538ae6f922086fec9 07a86575edc308e66b6c8873ed4a93ef3a063e55 git Not specified
CNA Linux Linux affected c1124c09e1035cabdbc17d4538ae6f922086fec9 4105a4c0678b2808fc8046b60321b4f1cc7dae75 git Not specified
CNA Linux Linux affected 4.10 Not specified
CNA Linux Linux unaffected 4.10 semver Not specified
CNA Linux Linux unaffected 5.10.270 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.221 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.188 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.157 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.110 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.51 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.5 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/5b063739619990d5de0c94c85d6e5be14e7cbdfe 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/4fe8a91a9266f1321c2d31ce67940a4e8b93559e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/4105a4c0678b2808fc8046b60321b4f1cc7dae75 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5a4fe7a87841af23ba80bae31b80355b16926cf4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f4bfd755c52dfa7584e6c9374206b71b8895c997 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3be8380fb14d602cd833e5852e6d83c1e7eb1ceb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/96982734e765c13c3db02067e1d5784682085f5c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/07a86575edc308e66b6c8873ed4a93ef3a063e55 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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