{"id":"CVE-2026-89474","state":"PUBLISHED","title":"power: supply: bq256xx: drain usb_work before freeing the charger","description":"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.","publishedAt":"2026-09-11T19:43:31.882Z","updatedAt":"2026-10-19T08:47:23.191Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"32e4978bb920d047fe5de3ea42d176f267c01f63","status":"affected","lessThan":"9dcfdf6c598301b278f0b3490eb2bf4f600524e2","versionType":"git"},{"version":"32e4978bb920d047fe5de3ea42d176f267c01f63","status":"affected","lessThan":"fd08d4dbbec07a44f01b0ddb041912be0dc88f8c","versionType":"git"},{"version":"32e4978bb920d047fe5de3ea42d176f267c01f63","status":"affected","lessThan":"2cfb59dc9df8b5ebdd95e3d874a7f4690cee2bc8","versionType":"git"},{"version":"32e4978bb920d047fe5de3ea42d176f267c01f63","status":"affected","lessThan":"9a467bd1e6811011026ad4c8de701b940d88a00c","versionType":"git"},{"version":"32e4978bb920d047fe5de3ea42d176f267c01f63","status":"affected","lessThan":"9e1aba34df9a87d53460888e05718717c0f69343","versionType":"git"},{"version":"32e4978bb920d047fe5de3ea42d176f267c01f63","status":"affected","lessThan":"c8addb842ae8dcf69c15fc976e33e3bd538a41d7","versionType":"git"},{"version":"32e4978bb920d047fe5de3ea42d176f267c01f63","status":"affected","lessThan":"2dd6cd823777bea6d9a880a12a92a73ec76aee0b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/power/supply/bq256xx_charger.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.12","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.109","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/power/supply/bq256xx_charger.c"]}],"references":["https://git.kernel.org/stable/c/9dcfdf6c598301b278f0b3490eb2bf4f600524e2","https://git.kernel.org/stable/c/fd08d4dbbec07a44f01b0ddb041912be0dc88f8c","https://git.kernel.org/stable/c/2cfb59dc9df8b5ebdd95e3d874a7f4690cee2bc8","https://git.kernel.org/stable/c/9a467bd1e6811011026ad4c8de701b940d88a00c","https://git.kernel.org/stable/c/9e1aba34df9a87d53460888e05718717c0f69343","https://git.kernel.org/stable/c/c8addb842ae8dcf69c15fc976e33e3bd538a41d7","https://git.kernel.org/stable/c/2dd6cd823777bea6d9a880a12a92a73ec76aee0b"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/89xxx/CVE-2026-89474.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89474","state":"PUBLISHED","datePublished":"2026-09-11T19:43:31.882Z","dateUpdated":"2026-10-19T08:47:23.191Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.710Z"},"containers":{"cna":{"title":"power: supply: bq256xx: drain usb_work before freeing the charger","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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"32e4978bb920d047fe5de3ea42d176f267c01f63","status":"affected","lessThan":"9dcfdf6c598301b278f0b3490eb2bf4f600524e2","versionType":"git"},{"version":"32e4978bb920d047fe5de3ea42d176f267c01f63","status":"affected","lessThan":"fd08d4dbbec07a44f01b0ddb041912be0dc88f8c","versionType":"git"},{"version":"32e4978bb920d047fe5de3ea42d176f267c01f63","status":"affected","lessThan":"2cfb59dc9df8b5ebdd95e3d874a7f4690cee2bc8","versionType":"git"},{"version":"32e4978bb920d047fe5de3ea42d176f267c01f63","status":"affected","lessThan":"9a467bd1e6811011026ad4c8de701b940d88a00c","versionType":"git"},{"version":"32e4978bb920d047fe5de3ea42d176f267c01f63","status":"affected","lessThan":"9e1aba34df9a87d53460888e05718717c0f69343","versionType":"git"},{"version":"32e4978bb920d047fe5de3ea42d176f267c01f63","status":"affected","lessThan":"c8addb842ae8dcf69c15fc976e33e3bd538a41d7","versionType":"git"},{"version":"32e4978bb920d047fe5de3ea42d176f267c01f63","status":"affected","lessThan":"2dd6cd823777bea6d9a880a12a92a73ec76aee0b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/power/supply/bq256xx_charger.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.12","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.109","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/power/supply/bq256xx_charger.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/9dcfdf6c598301b278f0b3490eb2bf4f600524e2"},{"url":"https://git.kernel.org/stable/c/fd08d4dbbec07a44f01b0ddb041912be0dc88f8c"},{"url":"https://git.kernel.org/stable/c/2cfb59dc9df8b5ebdd95e3d874a7f4690cee2bc8"},{"url":"https://git.kernel.org/stable/c/9a467bd1e6811011026ad4c8de701b940d88a00c"},{"url":"https://git.kernel.org/stable/c/9e1aba34df9a87d53460888e05718717c0f69343"},{"url":"https://git.kernel.org/stable/c/c8addb842ae8dcf69c15fc976e33e3bd538a41d7"},{"url":"https://git.kernel.org/stable/c/2dd6cd823777bea6d9a880a12a92a73ec76aee0b"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T08:47:23.191Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"6.12.109"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"6.18.50"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"7.2.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}