Bluetooth: af_bluetooth: Fix deadlock
Summary
| CVE | CVE-2024-26886 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2024-04-17 11:15:10 UTC |
| Updated | 2026-06-01 17:16:28 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: Bluetooth: af_bluetooth: Fix deadlock Attemting to do sock_lock on .recvmsg may cause a deadlock as shown bellow, so instead of using sock_sock this uses sk_receive_queue.lock on bt_sock_ioctl to avoid the UAF: INFO: task kworker/u9:1:121 blocked for more than 30 seconds. Not tainted 6.7.6-lemon #183 Workqueue: hci0 hci_rx_work Call Trace: <TASK> __schedule+0x37d/0xa00 schedule+0x32/0xe0 __lock_sock+0x68/0xa0 ? __pfx_autoremove_wake_function+0x10/0x10 lock_sock_nested+0x43/0x50 l2cap_sock_recv_cb+0x21/0xa0 l2cap_recv_frame+0x55b/0x30a0 ? psi_task_switch+0xeb/0x270 ? finish_task_switch.isra.0+0x93/0x2a0 hci_rx_work+0x33a/0x3f0 process_one_work+0x13a/0x2f0 worker_thread+0x2f0/0x410 ? __pfx_worker_thread+0x10/0x10 kthread+0xe0/0x110 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x2c/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1b/0x30 </TASK> |
Risk And Classification
Primary CVSS: v3.1 6.5 MEDIUM from ADP
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Problem Types: CWE-416 | CWE-416 CWE-416 Use After Free
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | ADP | DECLARED | 6.5 | MEDIUM | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | Secondary | 6.5 | MEDIUM | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
CVSS v3.1 Breakdown
Attack Vector
AdjacentAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Linux | Linux Kernel | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 2b16d960c79abc397f102c3d23d30005b68cb036 60673f442984fe689d4127a5dd4be414247b3d67 git | Not specified |
| CNA | Linux | Linux | affected 1d576c3a5af850bf11fbd103f9ba11aa6d6061fb 64be3c6154886200708da0dfe259705fb992416c git | Not specified |
| CNA | Linux | Linux | affected 2e07e8348ea454615e268222ae3fc240421be768 817e8138ce86001b2fa5c63d6ede756e205a01f7 git | Not specified |
| CNA | Linux | Linux | affected 2e07e8348ea454615e268222ae3fc240421be768 2c9e2df022ef8b9d7fac58a04a2ef4ed25288955 git | Not specified |
| CNA | Linux | Linux | affected 2e07e8348ea454615e268222ae3fc240421be768 f7b94bdc1ec107c92262716b073b3e816d4784fb git | Not specified |
| CNA | Linux | Linux | affected db1b14eec8c61a20374de9f9c2ddc6c9406a8c42 git | Not specified |
| CNA | Linux | Linux | affected 37f71e2c9f515834841826f4eb68ec33cfb2a1ff git | Not specified |
| CNA | Linux | Linux | affected 5.15.146 5.15.209 semver | Not specified |
| CNA | Linux | Linux | affected 6.6.9 6.6.23 semver | Not specified |
| CNA | Linux | Linux | affected 5.10.206 5.11 semver | Not specified |
| CNA | Linux | Linux | affected 6.1.70 6.2 semver | Not specified |
| CNA | Linux | Linux | affected 6.7 | Not specified |
| CNA | Linux | Linux | unaffected 6.7 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.209 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.23 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.7.11 6.7.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.8.2 6.8.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.9 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/f7b94bdc1ec107c92262716b073b3e816d4784fb | af854a3a-2127-422b-91ae-364da2661108 | git.kernel.org | Patch |
| git.kernel.org/stable/c/817e8138ce86001b2fa5c63d6ede756e205a01f7 | af854a3a-2127-422b-91ae-364da2661108 | git.kernel.org | Patch |
| git.kernel.org/stable/c/cb8adca52f306563d958a863bb0cbae9c184d1ae | af854a3a-2127-422b-91ae-364da2661108 | git.kernel.org | Patch |
| git.kernel.org/stable/c/2c9e2df022ef8b9d7fac58a04a2ef4ed25288955 | af854a3a-2127-422b-91ae-364da2661108 | git.kernel.org | Patch |
| git.kernel.org/stable/c/60673f442984fe689d4127a5dd4be414247b3d67 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/64be3c6154886200708da0dfe259705fb992416c | af854a3a-2127-422b-91ae-364da2661108 | git.kernel.org | Patch |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.