power: supply: bq24257: fix use-after-free on remove

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-89475
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-11 20:19:28 UTC
Updated2026-09-11 20:19:28 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: power: supply: bq24257: fix use-after-free on remove The STAT-pin interrupt is devm-managed, so it stays armed until the devm cleanup that runs after remove() returns. remove() cancels bq->iilimit_setup_work while the threaded handler can still fire; that handler reschedules the work and dereferences bq, so the work runs against freed memory once devm frees bq. Make the delayed work device-managed with devm_delayed_work_autocancel(), registered before the interrupt request. The devm cleanup then releases the interrupt first, so the handler can no longer reschedule the work, and cancels the work before bq is freed. The explicit cancel_delayed_work_sync() in remove() is no longer needed and is dropped. Found by static analysis.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 2219a935963e5eeb19e5abfb99475fcc06bbb804 861ec73ce86e2ca18082cc7be4f140a5bbdf1428 git Not specified
CNA Linux Linux affected 2219a935963e5eeb19e5abfb99475fcc06bbb804 f495808cdd6d9576965787cf6d9737d0b0e86b73 git Not specified
CNA Linux Linux affected 2219a935963e5eeb19e5abfb99475fcc06bbb804 47ccbad210f48721c30d69d65b83dc9fff919ca9 git Not specified
CNA Linux Linux affected 2219a935963e5eeb19e5abfb99475fcc06bbb804 9d34c9d660c3d0931d2cc749c46c47cf31f96e48 git Not specified
CNA Linux Linux affected 4.2 Not specified
CNA Linux Linux unaffected 4.2 semver Not specified
CNA Linux Linux unaffected 6.12.109 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.50 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.4 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/f495808cdd6d9576965787cf6d9737d0b0e86b73 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/9d34c9d660c3d0931d2cc749c46c47cf31f96e48 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/47ccbad210f48721c30d69d65b83dc9fff919ca9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/861ec73ce86e2ca18082cc7be4f140a5bbdf1428 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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