{"id":"CVE-2026-45867","state":"PUBLISHED","title":"power: supply: act8945a: Fix use-after-free in power_supply_changed()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: act8945a: Fix use-after-free in power_supply_changed()\n\nUsing the `devm_` variant for requesting IRQ _before_ the `devm_`\nvariant for allocating/registering the `power_supply` handle, means that\nthe `power_supply` handle will be deallocated/unregistered _before_ the\ninterrupt handler (since `devm_` naturally deallocates in reverse\nallocation order). This means that during removal, there is a race\ncondition where an interrupt can fire just _after_ the `power_supply`\nhandle has been freed, *but* just _before_ the corresponding\nunregistration of the IRQ handler has run.\n\nThis will lead to the IRQ handler calling `power_supply_changed()` with\na freed `power_supply` handle. Which usually crashes the system or\notherwise silently corrupts the memory...\n\nNote that there is a similar situation which can also happen during\n`probe()`; the possibility of an interrupt firing _before_ registering\nthe `power_supply` handle. This would then lead to the nasty situation\nof using the `power_supply` handle *uninitialized* in\n`power_supply_changed()`.\n\nFix this racy use-after-free by making sure the IRQ is requested _after_\nthe registration of the `power_supply` handle.","publishedAt":"2026-05-27T12:15:47.222Z","updatedAt":"2026-05-27T12:15:47.222Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a09209acd6a808794bdd7866af3678d1fd1d90e7","status":"affected","lessThan":"f2a0777b1e5a3cee1712c4d3e9095c0df8fc8cb3","versionType":"git"},{"version":"a09209acd6a808794bdd7866af3678d1fd1d90e7","status":"affected","lessThan":"0768e8525a46df103647ca5059b32320d7fd17e4","versionType":"git"},{"version":"a09209acd6a808794bdd7866af3678d1fd1d90e7","status":"affected","lessThan":"d023ef9f748b2090f7a9dbdd5c622b6ad99088ea","versionType":"git"},{"version":"a09209acd6a808794bdd7866af3678d1fd1d90e7","status":"affected","lessThan":"697bb5dc0cb4791e244f3970b067bc1ef33be9d9","versionType":"git"},{"version":"a09209acd6a808794bdd7866af3678d1fd1d90e7","status":"affected","lessThan":"76a42ba547a9b2e2337894f67a4d9247445007d5","versionType":"git"},{"version":"a09209acd6a808794bdd7866af3678d1fd1d90e7","status":"affected","lessThan":"f27eb76def5c07e4d7cc468b40741f19dafc83ce","versionType":"git"},{"version":"a09209acd6a808794bdd7866af3678d1fd1d90e7","status":"affected","lessThan":"83c1bd466c514cb24ca6ef347c5aac76a13c4e1e","versionType":"git"},{"version":"a09209acd6a808794bdd7866af3678d1fd1d90e7","status":"affected","lessThan":"3291c51d4684d048dd2eb91b5b65fcfdaf72141f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/power/supply/act8945a_charger.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.9","versionType":"semver"},{"version":"5.10.252","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.202","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.165","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.128","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.14","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.4","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","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/act8945a_charger.c"]}],"references":["https://git.kernel.org/stable/c/f2a0777b1e5a3cee1712c4d3e9095c0df8fc8cb3","https://git.kernel.org/stable/c/0768e8525a46df103647ca5059b32320d7fd17e4","https://git.kernel.org/stable/c/d023ef9f748b2090f7a9dbdd5c622b6ad99088ea","https://git.kernel.org/stable/c/697bb5dc0cb4791e244f3970b067bc1ef33be9d9","https://git.kernel.org/stable/c/76a42ba547a9b2e2337894f67a4d9247445007d5","https://git.kernel.org/stable/c/f27eb76def5c07e4d7cc468b40741f19dafc83ce","https://git.kernel.org/stable/c/83c1bd466c514cb24ca6ef347c5aac76a13c4e1e","https://git.kernel.org/stable/c/3291c51d4684d048dd2eb91b5b65fcfdaf72141f"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45867.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45867","state":"PUBLISHED","datePublished":"2026-05-27T12:15:47.222Z","dateUpdated":"2026-05-27T12:15:47.222Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.080Z"},"containers":{"cna":{"title":"power: supply: act8945a: Fix use-after-free in power_supply_changed()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: act8945a: Fix use-after-free in power_supply_changed()\n\nUsing the `devm_` variant for requesting IRQ _before_ the `devm_`\nvariant for allocating/registering the `power_supply` handle, means that\nthe `power_supply` handle will be deallocated/unregistered _before_ the\ninterrupt handler (since `devm_` naturally deallocates in reverse\nallocation order). This means that during removal, there is a race\ncondition where an interrupt can fire just _after_ the `power_supply`\nhandle has been freed, *but* just _before_ the corresponding\nunregistration of the IRQ handler has run.\n\nThis will lead to the IRQ handler calling `power_supply_changed()` with\na freed `power_supply` handle. Which usually crashes the system or\notherwise silently corrupts the memory...\n\nNote that there is a similar situation which can also happen during\n`probe()`; the possibility of an interrupt firing _before_ registering\nthe `power_supply` handle. This would then lead to the nasty situation\nof using the `power_supply` handle *uninitialized* in\n`power_supply_changed()`.\n\nFix this racy use-after-free by making sure the IRQ is requested _after_\nthe registration of the `power_supply` handle."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a09209acd6a808794bdd7866af3678d1fd1d90e7","status":"affected","lessThan":"f2a0777b1e5a3cee1712c4d3e9095c0df8fc8cb3","versionType":"git"},{"version":"a09209acd6a808794bdd7866af3678d1fd1d90e7","status":"affected","lessThan":"0768e8525a46df103647ca5059b32320d7fd17e4","versionType":"git"},{"version":"a09209acd6a808794bdd7866af3678d1fd1d90e7","status":"affected","lessThan":"d023ef9f748b2090f7a9dbdd5c622b6ad99088ea","versionType":"git"},{"version":"a09209acd6a808794bdd7866af3678d1fd1d90e7","status":"affected","lessThan":"697bb5dc0cb4791e244f3970b067bc1ef33be9d9","versionType":"git"},{"version":"a09209acd6a808794bdd7866af3678d1fd1d90e7","status":"affected","lessThan":"76a42ba547a9b2e2337894f67a4d9247445007d5","versionType":"git"},{"version":"a09209acd6a808794bdd7866af3678d1fd1d90e7","status":"affected","lessThan":"f27eb76def5c07e4d7cc468b40741f19dafc83ce","versionType":"git"},{"version":"a09209acd6a808794bdd7866af3678d1fd1d90e7","status":"affected","lessThan":"83c1bd466c514cb24ca6ef347c5aac76a13c4e1e","versionType":"git"},{"version":"a09209acd6a808794bdd7866af3678d1fd1d90e7","status":"affected","lessThan":"3291c51d4684d048dd2eb91b5b65fcfdaf72141f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/power/supply/act8945a_charger.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.9","versionType":"semver"},{"version":"5.10.252","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.202","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.165","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.128","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.14","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.4","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","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/act8945a_charger.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/f2a0777b1e5a3cee1712c4d3e9095c0df8fc8cb3"},{"url":"https://git.kernel.org/stable/c/0768e8525a46df103647ca5059b32320d7fd17e4"},{"url":"https://git.kernel.org/stable/c/d023ef9f748b2090f7a9dbdd5c622b6ad99088ea"},{"url":"https://git.kernel.org/stable/c/697bb5dc0cb4791e244f3970b067bc1ef33be9d9"},{"url":"https://git.kernel.org/stable/c/76a42ba547a9b2e2337894f67a4d9247445007d5"},{"url":"https://git.kernel.org/stable/c/f27eb76def5c07e4d7cc468b40741f19dafc83ce"},{"url":"https://git.kernel.org/stable/c/83c1bd466c514cb24ca6ef347c5aac76a13c4e1e"},{"url":"https://git.kernel.org/stable/c/3291c51d4684d048dd2eb91b5b65fcfdaf72141f"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-27T12:15:47.222Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.10.252"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.15.202"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.1.165"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.6.128"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.12.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.18.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.19.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}