{"id":"CVE-2026-45879","summary":"power: supply: bq25980: Fix use-after-free in power_supply_changed()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: bq25980: 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":"2026-06-27T11:54:45.968587527Z","published":"2026-05-27T12:16:50.137Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45879.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/03d1e4ee4e6aa6d2966e883e4ca0e5be73bf1b7c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0560a4b09c92e2ecaa883965cf6f9ca51c158ff9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0de95d29d847c6217b7d5845e24a71a4aee7b359"},{"type":"WEB","url":"https://git.kernel.org/stable/c/16875e3b7bc9e59bfa0acaf1e43f275a6f42a30f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4aeaf03c17260415c2fdd55992f9ad4188d5455a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5f0b1cb41906e86b64bf69f5ededb83b0d757c27"},{"type":"WEB","url":"https://git.kernel.org/stable/c/86f93dfb23f5bf4f285c4256a7e909d222f7de56"},{"type":"WEB","url":"https://git.kernel.org/stable/c/abea607ff2f62f4c0a5fb29f7fbdaaab163276a4"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45879.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45879"},{"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":"5069185fc18e810715a91d80fcd075e03add600c"},{"fixed":"86f93dfb23f5bf4f285c4256a7e909d222f7de56"},{"fixed":"16875e3b7bc9e59bfa0acaf1e43f275a6f42a30f"},{"fixed":"0560a4b09c92e2ecaa883965cf6f9ca51c158ff9"},{"fixed":"0de95d29d847c6217b7d5845e24a71a4aee7b359"},{"fixed":"4aeaf03c17260415c2fdd55992f9ad4188d5455a"},{"fixed":"03d1e4ee4e6aa6d2966e883e4ca0e5be73bf1b7c"},{"fixed":"abea607ff2f62f4c0a5fb29f7fbdaaab163276a4"},{"fixed":"5f0b1cb41906e86b64bf69f5ededb83b0d757c27"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-45879.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.10.0"},{"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-2026-45879.json"}}],"schema_version":"1.7.5"}