ACPI: processor: Unregister cpufreq notifier on init failure

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Summary

CVECVE-2026-90364
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-17 17:17:35 UTC
Updated2026-09-17 17:17:35 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: ACPI: processor: Unregister cpufreq notifier on init failure acpi_processor_driver_init() registers the cpufreq policy notifier before registering the ACPI processor driver and setting up CPU hotplug state. If driver_register() or cpuhp_setup_state() fails, the error path only unregisters the ACPI processor driver and the idle driver. The cpufreq notifier remains registered even though initialization failed. Mirror the module exit path on the init failure path and unregister the cpufreq notifier when it has been registered.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected c0e0421a60bf468e88cf569fbd727346b138ed04 ccee0785030978c49505e04954eee3f30a5f01ca git Not specified
CNA Linux Linux affected c0e0421a60bf468e88cf569fbd727346b138ed04 8f3036c5de8b651880f323e223b1604b6cfbff21 git Not specified
CNA Linux Linux affected c0e0421a60bf468e88cf569fbd727346b138ed04 64976f3b34b07eb866ead4052cefe7e9ff45fd2f git Not specified
CNA Linux Linux affected c0e0421a60bf468e88cf569fbd727346b138ed04 182cd086b31ea4ccc1d8f2ec5b81e988dfe0b892 git Not specified
CNA Linux Linux affected c0e0421a60bf468e88cf569fbd727346b138ed04 06f32dd67e6b23a05bef0d8183c5335af91c0c3b git Not specified
CNA Linux Linux affected 6.3 Not specified
CNA Linux Linux unaffected 6.3 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 6.18.52 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.6 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/06f32dd67e6b23a05bef0d8183c5335af91c0c3b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/64976f3b34b07eb866ead4052cefe7e9ff45fd2f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8f3036c5de8b651880f323e223b1604b6cfbff21 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ccee0785030978c49505e04954eee3f30a5f01ca 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/182cd086b31ea4ccc1d8f2ec5b81e988dfe0b892 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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