{"id":"CVE-2026-45936","state":"PUBLISHED","title":"power: supply: goldfish: Fix use-after-free in power_supply_changed()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: goldfish: 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":"2026-05-27T12:17:53.451Z","updatedAt":"2026-05-27T12:17:53.451Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"84d7b768748943db2bb658b43931fdab04c224cc","status":"affected","lessThan":"589d4fe56713c6344cd9f8939f9c7621c85f0966","versionType":"git"},{"version":"84d7b768748943db2bb658b43931fdab04c224cc","status":"affected","lessThan":"bad8b61eb5059acd88349680e47839342dc89e94","versionType":"git"},{"version":"84d7b768748943db2bb658b43931fdab04c224cc","status":"affected","lessThan":"33751e28842bf5aee5ef7b2b8d5e456a069095cb","versionType":"git"},{"version":"84d7b768748943db2bb658b43931fdab04c224cc","status":"affected","lessThan":"77ea437faa4c06362e3ecfd2d7264eaa7ac1e82c","versionType":"git"},{"version":"84d7b768748943db2bb658b43931fdab04c224cc","status":"affected","lessThan":"4350505e82b4f972ddb788e1c712c557c38859d0","versionType":"git"},{"version":"84d7b768748943db2bb658b43931fdab04c224cc","status":"affected","lessThan":"8c89aade8335e26a6a7dcda18992d15f51943927","versionType":"git"},{"version":"84d7b768748943db2bb658b43931fdab04c224cc","status":"affected","lessThan":"0b29ffe4090a3fc7a7649de20e1eb1e53adddac7","versionType":"git"},{"version":"84d7b768748943db2bb658b43931fdab04c224cc","status":"affected","lessThan":"b2ce982e2e0c888dc55c888ad0e20ea04daf2e6b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/power/supply/goldfish_battery.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.9","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/goldfish_battery.c"]}],"references":["https://git.kernel.org/stable/c/589d4fe56713c6344cd9f8939f9c7621c85f0966","https://git.kernel.org/stable/c/bad8b61eb5059acd88349680e47839342dc89e94","https://git.kernel.org/stable/c/33751e28842bf5aee5ef7b2b8d5e456a069095cb","https://git.kernel.org/stable/c/77ea437faa4c06362e3ecfd2d7264eaa7ac1e82c","https://git.kernel.org/stable/c/4350505e82b4f972ddb788e1c712c557c38859d0","https://git.kernel.org/stable/c/8c89aade8335e26a6a7dcda18992d15f51943927","https://git.kernel.org/stable/c/0b29ffe4090a3fc7a7649de20e1eb1e53adddac7","https://git.kernel.org/stable/c/b2ce982e2e0c888dc55c888ad0e20ea04daf2e6b"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45936.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45936","state":"PUBLISHED","datePublished":"2026-05-27T12:17:53.451Z","dateUpdated":"2026-05-27T12:17:53.451Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.086Z"},"containers":{"cna":{"title":"power: supply: goldfish: 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: goldfish: 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":"84d7b768748943db2bb658b43931fdab04c224cc","status":"affected","lessThan":"589d4fe56713c6344cd9f8939f9c7621c85f0966","versionType":"git"},{"version":"84d7b768748943db2bb658b43931fdab04c224cc","status":"affected","lessThan":"bad8b61eb5059acd88349680e47839342dc89e94","versionType":"git"},{"version":"84d7b768748943db2bb658b43931fdab04c224cc","status":"affected","lessThan":"33751e28842bf5aee5ef7b2b8d5e456a069095cb","versionType":"git"},{"version":"84d7b768748943db2bb658b43931fdab04c224cc","status":"affected","lessThan":"77ea437faa4c06362e3ecfd2d7264eaa7ac1e82c","versionType":"git"},{"version":"84d7b768748943db2bb658b43931fdab04c224cc","status":"affected","lessThan":"4350505e82b4f972ddb788e1c712c557c38859d0","versionType":"git"},{"version":"84d7b768748943db2bb658b43931fdab04c224cc","status":"affected","lessThan":"8c89aade8335e26a6a7dcda18992d15f51943927","versionType":"git"},{"version":"84d7b768748943db2bb658b43931fdab04c224cc","status":"affected","lessThan":"0b29ffe4090a3fc7a7649de20e1eb1e53adddac7","versionType":"git"},{"version":"84d7b768748943db2bb658b43931fdab04c224cc","status":"affected","lessThan":"b2ce982e2e0c888dc55c888ad0e20ea04daf2e6b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/power/supply/goldfish_battery.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.9","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/goldfish_battery.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/589d4fe56713c6344cd9f8939f9c7621c85f0966"},{"url":"https://git.kernel.org/stable/c/bad8b61eb5059acd88349680e47839342dc89e94"},{"url":"https://git.kernel.org/stable/c/33751e28842bf5aee5ef7b2b8d5e456a069095cb"},{"url":"https://git.kernel.org/stable/c/77ea437faa4c06362e3ecfd2d7264eaa7ac1e82c"},{"url":"https://git.kernel.org/stable/c/4350505e82b4f972ddb788e1c712c557c38859d0"},{"url":"https://git.kernel.org/stable/c/8c89aade8335e26a6a7dcda18992d15f51943927"},{"url":"https://git.kernel.org/stable/c/0b29ffe4090a3fc7a7649de20e1eb1e53adddac7"},{"url":"https://git.kernel.org/stable/c/b2ce982e2e0c888dc55c888ad0e20ea04daf2e6b"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-27T12:17:53.451Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"5.10.252"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"5.15.202"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.1.165"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.6.128"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.12.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.18.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.19.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}