{"id":"CVE-2024-50029","title":"Bluetooth: hci_conn: Fix UAF in hci_enhanced_setup_sync","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_conn: Fix UAF in hci_enhanced_setup_sync\n\nThis checks if the ACL connection remains valid as it could be destroyed\nwhile hci_enhanced_setup_sync is pendi…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= e07a06b4eb417f5271d33ce2240e93c62d98b7b4 < 9b666a0490379c860eab380dec19a864c0bc256b","Linux >= e07a06b4eb417f5271d33ce2240e93c62d98b7b4 < 867639300759e3e1c5b1e1a5ff89231f263a32a7","Linux >= e07a06b4eb417f5271d33ce2240e93c62d98b7b4 < 98ccd44002d88cbf4edfc4480df532a3da5a013e","Linux >= e07a06b4eb417f5271d33ce2240e93c62d98b7b4 < 18fd04ad856df07733f5bb07e7f7168e7443d393","Linux 6.1"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2024-10-22T13:26:20.682749Z"},"published":"2024-10-21","updated":"2026-09-14","sourceUpdated":"2026-09-14T11:57:46.149Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-50029","references":[{"url":"https://git.kernel.org/stable/c/9b666a0490379c860eab380dec19a864c0bc256b"},{"url":"https://git.kernel.org/stable/c/867639300759e3e1c5b1e1a5ff89231f263a32a7"},{"url":"https://git.kernel.org/stable/c/98ccd44002d88cbf4edfc4480df532a3da5a013e"},{"url":"https://git.kernel.org/stable/c/18fd04ad856df07733f5bb07e7f7168e7443d393"}],"tags":["cve.org"],"epss":0.00369,"epssPercentile":0.30741,"ingestedAt":"2026-09-14T15:23:07.460Z","slug":"CVE-2024-50029","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_conn: Fix UAF in hci_enhanced_setup_sync\n\nThis checks if the ACL connection remains valid as it could be destroyed\nwhile hci_enhanced_setup_sync is pending on cmd_sync leading to the\nfollowing trace:\n\nBUG: KASAN: slab-use-after-free in hci_enhanced_setup_sync+0x91b/0xa60\nRead of size 1 at addr ffff888002328ffd by task kworker/u5:2/37\n\nCPU: 0 UID: 0 PID: 37 Comm: kworker/u5:2 Not tainted 6.11.0-rc6-01300-g810be445d8d6 #7099\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-2.fc40 04/01/2014\nWorkqueue: hci0 hci_cmd_sync_work\nCall Trace:\n <TASK>\n dump_stack_lvl+0x5d/0x80\n ? hci_enhanced_setup_sync+0x91b/0xa60\n print_report+0x152/0x4c0\n ? hci_enhanced_setup_sync+0x91b/0xa60\n ? __virt_addr_valid+0x1fa/0x420\n ? hci_enhanced_setup_sync+0x91b/0xa60\n kasan_report+0xda/0x1b0\n ? hci_enhanced_setup_sync+0x91b/0xa60\n hci_enhanced_setup_sync+0x91b/0xa60\n ? __pfx_hci_enhanced_setup_sync+0x10/0x10\n ? __pfx___mutex_lock+0x10/0x10\n hci_cmd_sync_work+0x1c2/0x330\n process_one_work+0x7d9/0x1360\n ? __pfx_lock_acquire+0x10/0x10\n ? __pfx_process_one_work+0x10/0x10\n ? assign_work+0x167/0x240\n worker_thread+0x5b7/0xf60\n ? __kthread_parkme+0xac/0x1c0\n ? __pfx_worker_thread+0x10/0x10\n ? __pfx_worker_thread+0x10/0x10\n kthread+0x293/0x360\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x2f/0x70\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1a/0x30\n </TASK>\n\nAllocated by task 34:\n kasan_save_stack+0x30/0x50\n kasan_save_track+0x14/0x30\n __kasan_kmalloc+0x8f/0xa0\n __hci_conn_add+0x187/0x17d0\n hci_connect_sco+0x2e1/0xb90\n sco_sock_connect+0x2a2/0xb80\n __sys_connect+0x227/0x2a0\n __x64_sys_connect+0x6d/0xb0\n do_syscall_64+0x71/0x140\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nFreed by task 37:\n kasan_save_stack+0x30/0x50\n kasan_save_track+0x14/0x30\n kasan_save_free_info+0x3b/0x60\n __kasan_slab_free+0x101/0x160\n kfree+0xd0/0x250\n device_release+0x9a/0x210\n kobject_put+0x151/0x280\n hci_conn_del+0x448/0xbf0\n hci_abort_conn_sync+0x46f/0x980\n hci_cmd_sync_work+0x1c2/0x330\n process_one_work+0x7d9/0x1360\n worker_thread+0x5b7/0xf60\n kthread+0x293/0x360\n ret_from_fork+0x2f/0x70\n ret_from_fork_asm+0x1a/0x30\n\n## Affected\n\n- `Linux >= e07a06b4eb417f5271d33ce2240e93c62d98b7b4 < 9b666a0490379c860eab380dec19a864c0bc256b`\n- `Linux >= e07a06b4eb417f5271d33ce2240e93c62d98b7b4 < 867639300759e3e1c5b1e1a5ff89231f263a32a7`\n- `Linux >= e07a06b4eb417f5271d33ce2240e93c62d98b7b4 < 98ccd44002d88cbf4edfc4480df532a3da5a013e`\n- `Linux >= e07a06b4eb417f5271d33ce2240e93c62d98b7b4 < 18fd04ad856df07733f5bb07e7f7168e7443d393`\n- `Linux 6.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}