{"id":"CVE-2024-41063","state":"PUBLISHED","title":"Bluetooth: hci_core: cancel all works upon hci_unregister_dev()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_core: cancel all works upon hci_unregister_dev()\n\nsyzbot is reporting that calling hci_release_dev() from hci_error_reset()\ndue to hci_dev_put() from hci_error_reset() can cause deadlock at\ndestroy_workqueue(), for hci_error_reset() is called from\nhdev->req_workqueue which destroy_workqueue() needs to flush.\n\nWe need to make sure that hdev->{rx_work,cmd_work,tx_work} which are\nqueued into hdev->workqueue and hdev->{power_on,error_reset} which are\nqueued into hdev->req_workqueue are no longer running by the moment\n\n       destroy_workqueue(hdev->workqueue);\n       destroy_workqueue(hdev->req_workqueue);\n\nare called from hci_release_dev().\n\nCall cancel_work_sync() on these work items from hci_unregister_dev()\nas soon as hdev->list is removed from hci_dev_list.","publishedAt":"2024-07-29T14:57:25.154Z","updatedAt":"2026-05-23T15:51:51.517Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"e0b278650f07acf2e0932149183458468a731c03","status":"affected","lessThan":"48542881997e17b49dc16b93fe910e0cfcf7a9f9","versionType":"git"},{"version":"98fb98fd37e42fd4ce13ff657ea64503e24b6090","status":"affected","lessThan":"9cfc84b1d464cc024286f42a090718f9067b80ed","versionType":"git"},{"version":"6dd0a9dfa99f8990a08eb8fdd8e79bee31c7d8e2","status":"affected","lessThan":"ddeda6ca5f218b668b560d90fc31ae469adbfd92","versionType":"git"},{"version":"da4569d450b193e39e87119fd316c0291b585d14","status":"affected","lessThan":"d2ce562a5aff1dcd0c50d9808ea825ef90da909f","versionType":"git"},{"version":"45085686b9559bfbe3a4f41d3d695a520668f5e1","status":"affected","lessThan":"96600c2e5ee8213dbab5df1617293d8e847bb4fa","versionType":"git"},{"version":"2ab9a19d896f5a0dd386e1f001c5309bc35f433b","status":"affected","lessThan":"d6cbce18370641a21dd889e8613d8153df15eb39","versionType":"git"},{"version":"2449007d3f73b2842c9734f45f0aadb522daf592","status":"affected","lessThan":"3f939bd73fed12dddc2a32a76116c19ca47c7678","versionType":"git"},{"version":"2449007d3f73b2842c9734f45f0aadb522daf592","status":"affected","lessThan":"0d151a103775dd9645c78c97f77d6e2a5298d913","versionType":"git"},{"version":"dd594cdc24f2e48dab441732e6dfcafd6b0711d1","status":"affected","versionType":"git"},{"version":"4.19.309","status":"affected","lessThan":"4.19.319","versionType":"semver"},{"version":"5.4.271","status":"affected","lessThan":"5.4.281","versionType":"semver"},{"version":"5.10.212","status":"affected","lessThan":"5.10.223","versionType":"semver"},{"version":"5.15.151","status":"affected","lessThan":"5.15.164","versionType":"semver"},{"version":"6.1.81","status":"affected","lessThan":"6.1.101","versionType":"semver"},{"version":"6.6.21","status":"affected","lessThan":"6.6.42","versionType":"semver"},{"version":"6.7.9","status":"affected","lessThan":"6.8","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/hci_core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.8","versionType":"semver"},{"version":"4.19.319","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.281","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.223","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.164","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.101","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.42","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.9.11","status":"unaffected","lessThanOrEqual":"6.9.*","versionType":"semver"},{"version":"6.10","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/hci_core.c"]}],"references":["https://git.kernel.org/stable/c/48542881997e17b49dc16b93fe910e0cfcf7a9f9","https://git.kernel.org/stable/c/9cfc84b1d464cc024286f42a090718f9067b80ed","https://git.kernel.org/stable/c/ddeda6ca5f218b668b560d90fc31ae469adbfd92","https://git.kernel.org/stable/c/d2ce562a5aff1dcd0c50d9808ea825ef90da909f","https://git.kernel.org/stable/c/96600c2e5ee8213dbab5df1617293d8e847bb4fa","https://git.kernel.org/stable/c/d6cbce18370641a21dd889e8613d8153df15eb39","https://git.kernel.org/stable/c/3f939bd73fed12dddc2a32a76116c19ca47c7678","https://git.kernel.org/stable/c/0d151a103775dd9645c78c97f77d6e2a5298d913","https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:07:39.287Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/41xxx/CVE-2024-41063.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-41063","state":"PUBLISHED","datePublished":"2024-07-29T14:57:25.154Z","dateUpdated":"2026-05-23T15:51:51.517Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-07-12T12:17:45.628Z"},"containers":{"cna":{"title":"Bluetooth: hci_core: cancel all works upon hci_unregister_dev()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_core: cancel all works upon hci_unregister_dev()\n\nsyzbot is reporting that calling hci_release_dev() from hci_error_reset()\ndue to hci_dev_put() from hci_error_reset() can cause deadlock at\ndestroy_workqueue(), for hci_error_reset() is called from\nhdev->req_workqueue which destroy_workqueue() needs to flush.\n\nWe need to make sure that hdev->{rx_work,cmd_work,tx_work} which are\nqueued into hdev->workqueue and hdev->{power_on,error_reset} which are\nqueued into hdev->req_workqueue are no longer running by the moment\n\n       destroy_workqueue(hdev->workqueue);\n       destroy_workqueue(hdev->req_workqueue);\n\nare called from hci_release_dev().\n\nCall cancel_work_sync() on these work items from hci_unregister_dev()\nas soon as hdev->list is removed from 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