{"id":"CVE-2024-26886","title":"Bluetooth: af_bluetooth: Fix deadlock","summary":"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_qu…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"adp","vendor":"Linux","product":"Linux","affected":["Linux >= 2b16d960c79abc397f102c3d23d30005b68cb036 < 60673f442984fe689d4127a5dd4be414247b3d67","Linux >= 37f71e2c9f515834841826f4eb68ec33cfb2a1ff < 0309acebc4b3884bfda332558bb8a1df052f4f39","Linux >= 1d576c3a5af850bf11fbd103f9ba11aa6d6061fb < 64be3c6154886200708da0dfe259705fb992416c","Linux >= 2e07e8348ea454615e268222ae3fc240421be768 < 817e8138ce86001b2fa5c63d6ede756e205a01f7","Linux >= 2e07e8348ea454615e268222ae3fc240421be768 < 2c9e2df022ef8b9d7fac58a04a2ef4ed25288955","Linux >= 2e07e8348ea454615e268222ae3fc240421be768 < f7b94bdc1ec107c92262716b073b3e816d4784fb","Linux db1b14eec8c61a20374de9f9c2ddc6c9406a8c42","Linux >= 5.15.146 < 5.15.209","Linux >= 6.1.70 < 6.1.191","Linux >= 6.6.9 < 6.6.23","Linux >= 5.10.206 < 5.11","Linux 6.7"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2024-06-17T17:41:20.868479Z"},"published":"2024-04-17","updated":"2026-10-30","sourceUpdated":"2026-10-30T12:17:59.005Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-26886","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"}],"tags":["cve.org"],"epss":0.00489,"epssPercentile":0.4238,"ingestedAt":"2026-11-03T12:44:28.801Z","slug":"CVE-2024-26886","body":"## Overview\n\nIn 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>\n\n## Affected\n\n- `Linux >= 2b16d960c79abc397f102c3d23d30005b68cb036 < 60673f442984fe689d4127a5dd4be414247b3d67`\n- `Linux >= 37f71e2c9f515834841826f4eb68ec33cfb2a1ff < 0309acebc4b3884bfda332558bb8a1df052f4f39`\n- `Linux >= 1d576c3a5af850bf11fbd103f9ba11aa6d6061fb < 64be3c6154886200708da0dfe259705fb992416c`\n- `Linux >= 2e07e8348ea454615e268222ae3fc240421be768 < 817e8138ce86001b2fa5c63d6ede756e205a01f7`\n- `Linux >= 2e07e8348ea454615e268222ae3fc240421be768 < 2c9e2df022ef8b9d7fac58a04a2ef4ed25288955`\n- `Linux >= 2e07e8348ea454615e268222ae3fc240421be768 < f7b94bdc1ec107c92262716b073b3e816d4784fb`\n- `Linux db1b14eec8c61a20374de9f9c2ddc6c9406a8c42`\n- `Linux >= 5.15.146 < 5.15.209`\n- `Linux >= 6.1.70 < 6.1.191`\n- `Linux >= 6.6.9 < 6.6.23`\n- `Linux >= 5.10.206 < 5.11`\n- `Linux 6.7`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}