ACPI: button: Fix ACPI GPE handler leak during removal

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Summary

CVECVE-2026-64013
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-19 16:17:41 UTC
Updated2026-07-19 16:17:41 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: ACPI: button: Fix ACPI GPE handler leak during removal Commit a7e23ec17fee ("ACPI: button: Install notifier for system events as well") changed the ACPI notify handler type for ACPI buttons to ACPI_ALL_NOTIFY, but it forgot to update acpi_button_remove() to reflect that change. This leads to leaking the notify handler past driver removal, which may cause a kernel crash to occur if ACPI notify on the given device is triggered after removing the driver, and causes a subsequent probe of the given device with the same driver to fail. Address this by updating the acpi_remove_notify_handler() call in acpi_button_remove() as appropriate.

Risk And Classification

EPSS: 0.001550000 probability, percentile 0.051040000 (date 2026-07-20)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected a7e23ec17feecc7bac0d500cea900cace7b50129 614cb8c26c5aa53196ee9b211b76ee618b147d32 git Not specified
CNA Linux Linux affected a7e23ec17feecc7bac0d500cea900cace7b50129 fe80251152fed5b185f795ef2cd9f7fe9c3162e0 git Not specified
CNA Linux Linux affected 6.15 Not specified
CNA Linux Linux unaffected 6.15 semver Not specified
CNA Linux Linux unaffected 7.0.12 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/614cb8c26c5aa53196ee9b211b76ee618b147d32 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/fe80251152fed5b185f795ef2cd9f7fe9c3162e0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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