{"id":"CVE-2026-45938","state":"PUBLISHED","title":"power: supply: pm8916_lbc: Fix use-after-free in power_supply_changed()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: pm8916_lbc: 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":"2026-05-27T12:17:54.812Z","updatedAt":"2026-05-27T12:17:54.812Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f8d7a3d21160a0cab4d15b81231f2a76b0fcee13","status":"affected","lessThan":"dbe579e620ef0f53db490ec79a8566e4ea8918ac","versionType":"git"},{"version":"f8d7a3d21160a0cab4d15b81231f2a76b0fcee13","status":"affected","lessThan":"08e674e9862a2db46fb234eb7c5442455ece0131","versionType":"git"},{"version":"f8d7a3d21160a0cab4d15b81231f2a76b0fcee13","status":"affected","lessThan":"d7d31fc99d248d5f47588f50dce5c7599c991c6a","versionType":"git"},{"version":"f8d7a3d21160a0cab4d15b81231f2a76b0fcee13","status":"affected","lessThan":"b7508129978ae1e2ed9b0410396abc05def9c4eb","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/power/supply/pm8916_lbc.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.7","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/pm8916_lbc.c"]}],"references":["https://git.kernel.org/stable/c/dbe579e620ef0f53db490ec79a8566e4ea8918ac","https://git.kernel.org/stable/c/08e674e9862a2db46fb234eb7c5442455ece0131","https://git.kernel.org/stable/c/d7d31fc99d248d5f47588f50dce5c7599c991c6a","https://git.kernel.org/stable/c/b7508129978ae1e2ed9b0410396abc05def9c4eb"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45938.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45938","state":"PUBLISHED","datePublished":"2026-05-27T12:17:54.812Z","dateUpdated":"2026-05-27T12:17:54.812Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.087Z"},"containers":{"cna":{"title":"power: supply: pm8916_lbc: 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: pm8916_lbc: 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":"f8d7a3d21160a0cab4d15b81231f2a76b0fcee13","status":"affected","lessThan":"dbe579e620ef0f53db490ec79a8566e4ea8918ac","versionType":"git"},{"version":"f8d7a3d21160a0cab4d15b81231f2a76b0fcee13","status":"affected","lessThan":"08e674e9862a2db46fb234eb7c5442455ece0131","versionType":"git"},{"version":"f8d7a3d21160a0cab4d15b81231f2a76b0fcee13","status":"affected","lessThan":"d7d31fc99d248d5f47588f50dce5c7599c991c6a","versionType":"git"},{"version":"f8d7a3d21160a0cab4d15b81231f2a76b0fcee13","status":"affected","lessThan":"b7508129978ae1e2ed9b0410396abc05def9c4eb","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/power/supply/pm8916_lbc.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.7","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/pm8916_lbc.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/dbe579e620ef0f53db490ec79a8566e4ea8918ac"},{"url":"https://git.kernel.org/stable/c/08e674e9862a2db46fb234eb7c5442455ece0131"},{"url":"https://git.kernel.org/stable/c/d7d31fc99d248d5f47588f50dce5c7599c991c6a"},{"url":"https://git.kernel.org/stable/c/b7508129978ae1e2ed9b0410396abc05def9c4eb"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-27T12:17:54.812Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.18.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.19.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}