CVE-2026-89946

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

No CVSS.

References

Link	Resource
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

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-16 11:17

Updated : 2026-09-16 11:17

NVD link : CVE-2026-89946

Mitre link : CVE-2026-89946

CVE.ORG link : CVE-2026-89946

JSON object : View

Products Affected

No product.

CWE

No CWE.

{"id": "CVE-2026-89946", "cveTags": [], "metrics": {}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8", "lessThan": "d07799302721d381aef834fac8a11d196894eccb", "versionType": "git"}, {"status": "affected", "version": "3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8", "lessThan": "5b5311427e54d9c0d07178ee42df68ba44c2d5ca", "versionType": "git"}, {"status": "affected", "version": "3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8", "lessThan": "a04722542c76ce861031384480825afded8cc4f4", "versionType": "git"}, {"status": "affected", "version": "3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8", "lessThan": "614c2616ea677abfbed917a92bdc5141efff3536", "versionType": "git"}, {"status": "affected", "version": "3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8", "lessThan": "6ae98918240585eb2ad32b097c4810f4e2dabe88", "versionType": "git"}, {"status": "affected", "version": "3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8", "lessThan": "6e369bc46663b4bfce3d5f8b8ed08e71ecea13a2", "versionType": "git"}, {"status": "affected", "version": "3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8", "lessThan": "84cf6acd01a1ec8f30276578a039216327af782e", "versionType": "git"}, {"status": "affected", "version": "3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8", "lessThan": "e074c12c428c633e079154301207a6079a208583", "versionType": "git"}], "programFiles": ["sound/soc/codecs/cs35l33.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.8"}, {"status": "unaffected", "version": "0", "lessThan": "4.8", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.270", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.221", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.188", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.157", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.110", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.51", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.2.5", "versionType": "semver", "lessThanOrEqual": "7.2.*"}, {"status": "unaffected", "version": "7.3-rc1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["sound/soc/codecs/cs35l33.c"], "defaultStatus": "affected"}]}], "published": "2026-09-16T11:17:04.547", "references": [{"url": "https://git.kernel.org/stable/c/5b5311427e54d9c0d07178ee42df68ba44c2d5ca", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/614c2616ea677abfbed917a92bdc5141efff3536", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6ae98918240585eb2ad32b097c4810f4e2dabe88", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6e369bc46663b4bfce3d5f8b8ed08e71ecea13a2", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/84cf6acd01a1ec8f30276578a039216327af782e", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a04722542c76ce861031384480825afded8cc4f4", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d07799302721d381aef834fac8a11d196894eccb", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e074c12c428c633e079154301207a6079a208583", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Received", "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: cs35l33: drain threaded IRQ before runtime suspend\n\ncs35l33_runtime_suspend() currently switches the codec into\nregcache_cache_only(true) and powers it down without first quiescing the\nthreaded IRQ registered by devm_request_threaded_irq(). That leaves a\nwindow where cs35l33_irq_thread() can still run after suspend has closed\noff live register access.\n\nA running system can reach this during runtime PM while the driver still\nhas critical fault IRQs unmasked. If the threaded handler runs in that\nwindow, it reads volatile INT_STATUS_1/2 after cache_only has been\nenabled, ignores the regmap_read() failures, and can still drive the\nAMP_SHORT_RLS, CAL_ERR_RLS, OTE_RLS, and OTW_RLS release paths.\n\nUse disable_irq() before entering cache_only/power-off so any in-flight\nthreaded handler is drained and no new IRQ thread can run during the\nsuspended state. Re-enable the IRQ only after runtime_resume() has\nrestored live register access with regcache_sync(). Since probe only\nwarns if devm_request_threaded_irq() fails, track whether the IRQ was\nactually installed before disabling or re-enabling it."}], "lastModified": "2026-09-16T11:17:04.547", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}