{"id":"CVE-2026-45885","summary":"power: supply: cpcap-battery: Fix use-after-free in power_supply_changed()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: cpcap-battery: 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":"2026-06-27T11:55:19.045270408Z","published":"2026-05-27T12:16:57.246Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45885.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2841bbb5a35c4449c0a0458e8e476b2a62f95147"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2ce2334be155bd8bad6377e99984246ce4dbd08c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3ff75cba1c98349a23a8f9333981deba1972cc11"},{"type":"WEB","url":"https://git.kernel.org/stable/c/642f33e34b969eedec334738fd5df95d2dc42742"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c549dd3de4b3f6e726d1b8386d40ccf7d3abdbe4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cbb9b07f88a9ef6518934c41eb3e8cf840d657d5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e261be6f18929f2397cd54cd583a2df624c129c1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f3fbe309c9bfe1aac1e2b26543e9dc4829f3275a"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45885.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45885"},{"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":"874b2adbed1253a11549cb9b7b912ab65fea9cf2"},{"fixed":"c549dd3de4b3f6e726d1b8386d40ccf7d3abdbe4"},{"fixed":"3ff75cba1c98349a23a8f9333981deba1972cc11"},{"fixed":"2ce2334be155bd8bad6377e99984246ce4dbd08c"},{"fixed":"cbb9b07f88a9ef6518934c41eb3e8cf840d657d5"},{"fixed":"f3fbe309c9bfe1aac1e2b26543e9dc4829f3275a"},{"fixed":"2841bbb5a35c4449c0a0458e8e476b2a62f95147"},{"fixed":"e261be6f18929f2397cd54cd583a2df624c129c1"},{"fixed":"642f33e34b969eedec334738fd5df95d2dc42742"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-45885.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.13.0"},{"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-2026-45885.json"}}],"schema_version":"1.7.5"}