{"id":"CVE-2026-45879","state":"PUBLISHED","title":"power: supply: bq25980: Fix use-after-free in power_supply_changed()","description":"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.","publishedAt":"2026-05-27T12:16:50.137Z","updatedAt":"2026-05-27T12:16:50.137Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5069185fc18e810715a91d80fcd075e03add600c","status":"affected","lessThan":"86f93dfb23f5bf4f285c4256a7e909d222f7de56","versionType":"git"},{"version":"5069185fc18e810715a91d80fcd075e03add600c","status":"affected","lessThan":"16875e3b7bc9e59bfa0acaf1e43f275a6f42a30f","versionType":"git"},{"version":"5069185fc18e810715a91d80fcd075e03add600c","status":"affected","lessThan":"0560a4b09c92e2ecaa883965cf6f9ca51c158ff9","versionType":"git"},{"version":"5069185fc18e810715a91d80fcd075e03add600c","status":"affected","lessThan":"0de95d29d847c6217b7d5845e24a71a4aee7b359","versionType":"git"},{"version":"5069185fc18e810715a91d80fcd075e03add600c","status":"affected","lessThan":"4aeaf03c17260415c2fdd55992f9ad4188d5455a","versionType":"git"},{"version":"5069185fc18e810715a91d80fcd075e03add600c","status":"affected","lessThan":"03d1e4ee4e6aa6d2966e883e4ca0e5be73bf1b7c","versionType":"git"},{"version":"5069185fc18e810715a91d80fcd075e03add600c","status":"affected","lessThan":"abea607ff2f62f4c0a5fb29f7fbdaaab163276a4","versionType":"git"},{"version":"5069185fc18e810715a91d80fcd075e03add600c","status":"affected","lessThan":"5f0b1cb41906e86b64bf69f5ededb83b0d757c27","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/power/supply/bq25980_charger.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","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/bq25980_charger.c"]}],"references":["https://git.kernel.org/stable/c/86f93dfb23f5bf4f285c4256a7e909d222f7de56","https://git.kernel.org/stable/c/16875e3b7bc9e59bfa0acaf1e43f275a6f42a30f","https://git.kernel.org/stable/c/0560a4b09c92e2ecaa883965cf6f9ca51c158ff9","https://git.kernel.org/stable/c/0de95d29d847c6217b7d5845e24a71a4aee7b359","https://git.kernel.org/stable/c/4aeaf03c17260415c2fdd55992f9ad4188d5455a","https://git.kernel.org/stable/c/03d1e4ee4e6aa6d2966e883e4ca0e5be73bf1b7c","https://git.kernel.org/stable/c/abea607ff2f62f4c0a5fb29f7fbdaaab163276a4","https://git.kernel.org/stable/c/5f0b1cb41906e86b64bf69f5ededb83b0d757c27"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45879.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45879","state":"PUBLISHED","datePublished":"2026-05-27T12:16:50.137Z","dateUpdated":"2026-05-27T12:16:50.137Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.081Z"},"containers":{"cna":{"title":"power: supply: bq25980: 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: 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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5069185fc18e810715a91d80fcd075e03add600c","status":"affected","lessThan":"86f93dfb23f5bf4f285c4256a7e909d222f7de56","versionType":"git"},{"version":"5069185fc18e810715a91d80fcd075e03add600c","status":"affected","lessThan":"16875e3b7bc9e59bfa0acaf1e43f275a6f42a30f","versionType":"git"},{"version":"5069185fc18e810715a91d80fcd075e03add600c","status":"affected","lessThan":"0560a4b09c92e2ecaa883965cf6f9ca51c158ff9","versionType":"git"},{"version":"5069185fc18e810715a91d80fcd075e03add600c","status":"affected","lessThan":"0de95d29d847c6217b7d5845e24a71a4aee7b359","versionType":"git"},{"version":"5069185fc18e810715a91d80fcd075e03add600c","status":"affected","lessThan":"4aeaf03c17260415c2fdd55992f9ad4188d5455a","versionType":"git"},{"version":"5069185fc18e810715a91d80fcd075e03add600c","status":"affected","lessThan":"03d1e4ee4e6aa6d2966e883e4ca0e5be73bf1b7c","versionType":"git"},{"version":"5069185fc18e810715a91d80fcd075e03add600c","status":"affected","lessThan":"abea607ff2f62f4c0a5fb29f7fbdaaab163276a4","versionType":"git"},{"version":"5069185fc18e810715a91d80fcd075e03add600c","status":"affected","lessThan":"5f0b1cb41906e86b64bf69f5ededb83b0d757c27","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/power/supply/bq25980_charger.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","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/bq25980_charger.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/86f93dfb23f5bf4f285c4256a7e909d222f7de56"},{"url":"https://git.kernel.org/stable/c/16875e3b7bc9e59bfa0acaf1e43f275a6f42a30f"},{"url":"https://git.kernel.org/stable/c/0560a4b09c92e2ecaa883965cf6f9ca51c158ff9"},{"url":"https://git.kernel.org/stable/c/0de95d29d847c6217b7d5845e24a71a4aee7b359"},{"url":"https://git.kernel.org/stable/c/4aeaf03c17260415c2fdd55992f9ad4188d5455a"},{"url":"https://git.kernel.org/stable/c/03d1e4ee4e6aa6d2966e883e4ca0e5be73bf1b7c"},{"url":"https://git.kernel.org/stable/c/abea607ff2f62f4c0a5fb29f7fbdaaab163276a4"},{"url":"https://git.kernel.org/stable/c/5f0b1cb41906e86b64bf69f5ededb83b0d757c27"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-27T12:16:50.137Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.10.252"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.15.202"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.1.165"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.6.128"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.12.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.18.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.19.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}