power: supply: qcom_battmgr: fix use-after-free

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-89467
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-11 20:19:27 UTC
Updated2026-09-11 20:19:27 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: power: supply: qcom_battmgr: fix use-after-free qcom_battmgr_pdr_notify() queues enable_work when the PMIC GLINK service comes up, and the worker recovers battmgr through container_of() to issue firmware requests. The PMIC GLINK client stays on the client list until its devres release action runs, so a PDR notification can keep queueing the work, and a pending or running worker can access battmgr after devres frees it. Make enable_work device-managed with devm_work_autocancel(), registered before the PMIC GLINK client is allocated. The devres cleanup then releases the client first, so no further notification can queue the work, and cancels the work before battmgr is freed. This issue was found by an in-house static analysis tool.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 29e8142b5623b5949587bcc4f591c4e6595c4aca 06618447029c6dddaa02f6e9528efe5dd49fc329 git Not specified
CNA Linux Linux affected 29e8142b5623b5949587bcc4f591c4e6595c4aca 49fbcd3da2958159370d25dafbf736e654a4d59b git Not specified
CNA Linux Linux affected 29e8142b5623b5949587bcc4f591c4e6595c4aca 4e40befedfc8ed86f44e1f81df92d13c149c9f8d git Not specified
CNA Linux Linux affected 6.3 Not specified
CNA Linux Linux unaffected 6.3 semver Not specified
CNA Linux Linux unaffected 6.18.50 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/06618447029c6dddaa02f6e9528efe5dd49fc329 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/4e40befedfc8ed86f44e1f81df92d13c149c9f8d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/49fbcd3da2958159370d25dafbf736e654a4d59b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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