{"id":"CVE-2026-45867","summary":"power: supply: act8945a: Fix use-after-free in power_supply_changed()","details":"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.","modified":"2026-06-27T11:55:07.855198582Z","published":"2026-05-27T12:15:47.222Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45867.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0768e8525a46df103647ca5059b32320d7fd17e4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3291c51d4684d048dd2eb91b5b65fcfdaf72141f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/697bb5dc0cb4791e244f3970b067bc1ef33be9d9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/76a42ba547a9b2e2337894f67a4d9247445007d5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/83c1bd466c514cb24ca6ef347c5aac76a13c4e1e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d023ef9f748b2090f7a9dbdd5c622b6ad99088ea"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f27eb76def5c07e4d7cc468b40741f19dafc83ce"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f2a0777b1e5a3cee1712c4d3e9095c0df8fc8cb3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45867.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45867"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"a09209acd6a808794bdd7866af3678d1fd1d90e7"},{"fixed":"f2a0777b1e5a3cee1712c4d3e9095c0df8fc8cb3"},{"fixed":"0768e8525a46df103647ca5059b32320d7fd17e4"},{"fixed":"d023ef9f748b2090f7a9dbdd5c622b6ad99088ea"},{"fixed":"697bb5dc0cb4791e244f3970b067bc1ef33be9d9"},{"fixed":"76a42ba547a9b2e2337894f67a4d9247445007d5"},{"fixed":"f27eb76def5c07e4d7cc468b40741f19dafc83ce"},{"fixed":"83c1bd466c514cb24ca6ef347c5aac76a13c4e1e"},{"fixed":"3291c51d4684d048dd2eb91b5b65fcfdaf72141f"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-45867.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.9.0"},{"fixed":"5.10.252"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.202"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.165"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.128"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.75"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.14"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-45867.json"}}],"schema_version":"1.7.5"}