{"id":"CVE-2024-26886","state":"PUBLISHED","title":"Bluetooth: af_bluetooth: Fix deadlock","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: af_bluetooth: Fix deadlock\n\nAttemting to do sock_lock on .recvmsg may cause a deadlock as shown\nbellow, so instead of using sock_sock this uses sk_receive_queue.lock\non bt_sock_ioctl to avoid the UAF:\n\nINFO: task kworker/u9:1:121 blocked for more than 30 seconds.\n      Not tainted 6.7.6-lemon #183\nWorkqueue: hci0 hci_rx_work\nCall Trace:\n <TASK>\n __schedule+0x37d/0xa00\n schedule+0x32/0xe0\n __lock_sock+0x68/0xa0\n ? __pfx_autoremove_wake_function+0x10/0x10\n lock_sock_nested+0x43/0x50\n l2cap_sock_recv_cb+0x21/0xa0\n l2cap_recv_frame+0x55b/0x30a0\n ? psi_task_switch+0xeb/0x270\n ? finish_task_switch.isra.0+0x93/0x2a0\n hci_rx_work+0x33a/0x3f0\n process_one_work+0x13a/0x2f0\n worker_thread+0x2f0/0x410\n ? __pfx_worker_thread+0x10/0x10\n kthread+0xe0/0x110\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x2c/0x50\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1b/0x30\n </TASK>","publishedAt":"2024-04-17T10:27:40.941Z","updatedAt":"2026-10-30T12:17:59.005Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2b16d960c79abc397f102c3d23d30005b68cb036","status":"affected","lessThan":"60673f442984fe689d4127a5dd4be414247b3d67","versionType":"git"},{"version":"37f71e2c9f515834841826f4eb68ec33cfb2a1ff","status":"affected","lessThan":"0309acebc4b3884bfda332558bb8a1df052f4f39","versionType":"git"},{"version":"1d576c3a5af850bf11fbd103f9ba11aa6d6061fb","status":"affected","lessThan":"64be3c6154886200708da0dfe259705fb992416c","versionType":"git"},{"version":"2e07e8348ea454615e268222ae3fc240421be768","status":"affected","lessThan":"817e8138ce86001b2fa5c63d6ede756e205a01f7","versionType":"git"},{"version":"2e07e8348ea454615e268222ae3fc240421be768","status":"affected","lessThan":"2c9e2df022ef8b9d7fac58a04a2ef4ed25288955","versionType":"git"},{"version":"2e07e8348ea454615e268222ae3fc240421be768","status":"affected","lessThan":"f7b94bdc1ec107c92262716b073b3e816d4784fb","versionType":"git"},{"version":"db1b14eec8c61a20374de9f9c2ddc6c9406a8c42","status":"affected","versionType":"git"},{"version":"5.15.146","status":"affected","lessThan":"5.15.209","versionType":"semver"},{"version":"6.1.70","status":"affected","lessThan":"6.1.191","versionType":"semver"},{"version":"6.6.9","status":"affected","lessThan":"6.6.23","versionType":"semver"},{"version":"5.10.206","status":"affected","lessThan":"5.11","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/af_bluetooth.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.7","versionType":"semver"},{"version":"5.15.209","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.23","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.7.11","status":"unaffected","lessThanOrEqual":"6.7.*","versionType":"semver"},{"version":"6.8.2","status":"unaffected","lessThanOrEqual":"6.8.*","versionType":"semver"},{"version":"6.9","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/af_bluetooth.c"]}],"references":["https://git.kernel.org/stable/c/60673f442984fe689d4127a5dd4be414247b3d67","https://git.kernel.org/stable/c/0309acebc4b3884bfda332558bb8a1df052f4f39","https://git.kernel.org/stable/c/64be3c6154886200708da0dfe259705fb992416c","https://git.kernel.org/stable/c/817e8138ce86001b2fa5c63d6ede756e205a01f7","https://git.kernel.org/stable/c/2c9e2df022ef8b9d7fac58a04a2ef4ed25288955","https://git.kernel.org/stable/c/f7b94bdc1ec107c92262716b073b3e816d4784fb","https://git.kernel.org/stable/c/cb8adca52f306563d958a863bb0cbae9c184d1ae"],"weaknesses":["CWE-416"],"ingestedAt":"2026-10-30T12:34:06.950Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/26xxx/CVE-2024-26886.json","commit":"db8103c5921aac81d5d90efcf3745980dafabf49","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-26886","state":"PUBLISHED","datePublished":"2024-04-17T10:27:40.941Z","dateUpdated":"2026-10-30T12:17:59.005Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-02-19T14:20:24.185Z"},"containers":{"cna":{"title":"Bluetooth: af_bluetooth: Fix deadlock","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: af_bluetooth: Fix deadlock\n\nAttemting to do sock_lock on .recvmsg may cause a deadlock as shown\nbellow, so instead of using sock_sock this uses sk_receive_queue.lock\non bt_sock_ioctl to avoid the UAF:\n\nINFO: task kworker/u9:1:121 blocked for more than 30 seconds.\n      Not tainted 6.7.6-lemon #183\nWorkqueue: hci0 hci_rx_work\nCall Trace:\n <TASK>\n __schedule+0x37d/0xa00\n schedule+0x32/0xe0\n __lock_sock+0x68/0xa0\n ? __pfx_autoremove_wake_function+0x10/0x10\n lock_sock_nested+0x43/0x50\n l2cap_sock_recv_cb+0x21/0xa0\n l2cap_recv_frame+0x55b/0x30a0\n ? psi_task_switch+0xeb/0x270\n ? finish_task_switch.isra.0+0x93/0x2a0\n hci_rx_work+0x33a/0x3f0\n process_one_work+0x13a/0x2f0\n worker_thread+0x2f0/0x410\n ? __pfx_worker_thread+0x10/0x10\n kthread+0xe0/0x110\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x2c/0x50\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1b/0x30\n </TASK>"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2b16d960c79abc397f102c3d23d30005b68cb036","status":"affected","lessThan":"60673f442984fe689d4127a5dd4be414247b3d67","versionType":"git"},{"version":"37f71e2c9f515834841826f4eb68ec33cfb2a1ff","status":"affected","lessThan":"0309acebc4b3884bfda332558bb8a1df052f4f39","versionType":"git"},{"version":"1d576c3a5af850bf11fbd103f9ba11aa6d6061fb","status":"affected","lessThan":"64be3c6154886200708da0dfe259705fb992416c","versionType":"git"},{"version":"2e07e8348ea454615e268222ae3fc240421be768","status":"affected","lessThan":"817e8138ce86001b2fa5c63d6ede756e205a01f7","versionType":"git"},{"version":"2e07e8348ea454615e268222ae3fc240421be768","status":"affected","lessThan":"2c9e2df022ef8b9d7fac58a04a2ef4ed25288955","versionType":"git"},{"version":"2e07e8348ea454615e268222ae3fc240421be768","status":"affected","lessThan":"f7b94bdc1ec107c92262716b073b3e816d4784fb","versionType":"git"},{"version":"db1b14eec8c61a20374de9f9c2ddc6c9406a8c42","status":"affected","versionType":"git"},{"version":"5.15.146","status":"affected","lessThan":"5.15.209","versionType":"semver"},{"version":"6.1.70","status":"affected","lessThan":"6.1.191","versionType":"semver"},{"version":"6.6.9","status":"affected","lessThan":"6.6.23","versionType":"semver"},{"version":"5.10.206","status":"affected","lessThan":"5.11","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/af_bluetooth.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.7","versionType":"semver"},{"version":"5.15.209","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.23","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.7.11","status":"unaffected","lessThanOrEqual":"6.7.*","versionType":"semver"},{"version":"6.8.2","status":"unaffected","lessThanOrEqual":"6.8.*","versionType":"semver"},{"version":"6.9","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/af_bluetooth.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/60673f442984fe689d4127a5dd4be414247b3d67"},{"url":"https://git.kernel.org/stable/c/0309acebc4b3884bfda332558bb8a1df052f4f39"},{"url":"https://git.kernel.org/stable/c/64be3c6154886200708da0dfe259705fb992416c"},{"url":"https://git.kernel.org/stable/c/817e8138ce86001b2fa5c63d6ede756e205a01f7"},{"url":"https://git.kernel.org/stable/c/2c9e2df022ef8b9d7fac58a04a2ef4ed25288955"},{"url":"https://git.kernel.org/stable/c/f7b94bdc1ec107c92262716b073b3e816d4784fb"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:17:59.005Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.146","versionEndExcluding":"5.15.209"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.70","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.9","versionEndExcluding":"6.6.23"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.7.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.8.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.206"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA 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