CVE-2026-89474

In the Linux kernel, the following vulnerability has been resolved: power: supply: bq256xx: drain usb_work before freeing the charger The USB-PHY notifier queues usb_work, whose handler calls power_supply_changed(bq->charger). The reset devm action only unregisters the notifier and was registered before the power supplies, so devm frees bq->charger on unwind before the action runs; a usb_work still queued can then dereference it. Register the reset action after the power supplies, so it unregisters the notifiers and drains usb_work before the supplies are released. Initialize usb_work and obtain the PHY references before registering the notifiers, so the worker cannot run before the supplies exist. Found by static analysis.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/2cfb59dc9df8b5ebdd95e3d874a7f4690cee2bc8
https://git.kernel.org/stable/c/2dd6cd823777bea6d9a880a12a92a73ec76aee0b
https://git.kernel.org/stable/c/9a467bd1e6811011026ad4c8de701b940d88a00c
https://git.kernel.org/stable/c/9dcfdf6c598301b278f0b3490eb2bf4f600524e2
https://git.kernel.org/stable/c/9e1aba34df9a87d53460888e05718717c0f69343
https://git.kernel.org/stable/c/c8addb842ae8dcf69c15fc976e33e3bd538a41d7
https://git.kernel.org/stable/c/fd08d4dbbec07a44f01b0ddb041912be0dc88f8c

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-11 20:19

Updated : 2026-09-14 13:19

NVD link : CVE-2026-89474

Mitre link : CVE-2026-89474

CVE.ORG link : CVE-2026-89474

JSON object : View

Products Affected

No product.

CWE

No CWE.

{"id": "CVE-2026-89474", "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": "32e4978bb920d047fe5de3ea42d176f267c01f63", "lessThan": "9dcfdf6c598301b278f0b3490eb2bf4f600524e2", "versionType": "git"}, {"status": "affected", "version": "32e4978bb920d047fe5de3ea42d176f267c01f63", "lessThan": "fd08d4dbbec07a44f01b0ddb041912be0dc88f8c", "versionType": "git"}, {"status": "affected", "version": "32e4978bb920d047fe5de3ea42d176f267c01f63", "lessThan": "2cfb59dc9df8b5ebdd95e3d874a7f4690cee2bc8", "versionType": "git"}, {"status": "affected", "version": "32e4978bb920d047fe5de3ea42d176f267c01f63", "lessThan": "9a467bd1e6811011026ad4c8de701b940d88a00c", "versionType": "git"}, {"status": "affected", "version": "32e4978bb920d047fe5de3ea42d176f267c01f63", "lessThan": "9e1aba34df9a87d53460888e05718717c0f69343", "versionType": "git"}, {"status": "affected", "version": "32e4978bb920d047fe5de3ea42d176f267c01f63", "lessThan": "c8addb842ae8dcf69c15fc976e33e3bd538a41d7", "versionType": "git"}, {"status": "affected", "version": "32e4978bb920d047fe5de3ea42d176f267c01f63", "lessThan": "2dd6cd823777bea6d9a880a12a92a73ec76aee0b", "versionType": "git"}], "programFiles": ["drivers/power/supply/bq256xx_charger.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.12"}, {"status": "unaffected", "version": "0", "lessThan": "5.12", "versionType": "semver"}, {"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": "6.12.109", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.50", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.2.4", "versionType": "semver", "lessThanOrEqual": "7.2.*"}, {"status": "unaffected", "version": "7.3-rc1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/power/supply/bq256xx_charger.c"], "defaultStatus": "affected"}]}], "published": "2026-09-11T20:19:28.687", "references": [{"url": "https://git.kernel.org/stable/c/2cfb59dc9df8b5ebdd95e3d874a7f4690cee2bc8", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/2dd6cd823777bea6d9a880a12a92a73ec76aee0b", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9a467bd1e6811011026ad4c8de701b940d88a00c", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9dcfdf6c598301b278f0b3490eb2bf4f600524e2", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9e1aba34df9a87d53460888e05718717c0f69343", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c8addb842ae8dcf69c15fc976e33e3bd538a41d7", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/fd08d4dbbec07a44f01b0ddb041912be0dc88f8c", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Received", "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: bq256xx: drain usb_work before freeing the charger\n\nThe USB-PHY notifier queues usb_work, whose handler calls\npower_supply_changed(bq->charger). The reset devm action only unregisters\nthe notifier and was registered before the power supplies, so devm frees\nbq->charger on unwind before the action runs; a usb_work still queued can\nthen dereference it.\n\nRegister the reset action after the power supplies, so it unregisters\nthe notifiers and drains usb_work before the supplies are released.\nInitialize usb_work and obtain the PHY references before registering\nthe notifiers, so the worker cannot run before the supplies exist.\n\nFound by static analysis."}], "lastModified": "2026-09-14T13:19:03.733", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}