CVE-2024-26886

Advisory lineage Upstream: 0 Downstream: 31
Modified
Published: 17 Apr 2024, 10:27
Last modified:01 Jun 2026, 16:04

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
v3.1 (cve.org)
EPSS Score
0.03% LOW
0% probability +0.01%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

17 Apr 2024, 10:27
Published
Vulnerability first disclosed
01 Jun 2026, 16:04
Last Modified
Vulnerability information updated

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>

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.03%• Percentile: 8%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • linux•linux

    2b16d960c79abc397f102c3d23d30005b68cb036 | ≥ 5.15.146, < 5.16 | ≥ 2b16d960c79abc397f102c3d23d30005b68cb036, < 60673f442984fe689d4127a5dd4be414247b3d67 | ≥ 1d576c3a5af850bf11fbd103f9ba11aa6d6061fb, < 64be3c6154886200708da0dfe259705fb992416c | ≥ 2e07e8348ea454615e268222ae3fc240421be768, < 817e8138ce86001b2fa5c63d6ede756e205a01f7 | ≥ 2e07e8348ea454615e268222ae3fc240421be768, < 2c9e2df022ef8b9d7fac58a04a2ef4ed25288955 | ≥ 2e07e8348ea454615e268222ae3fc240421be768, < f7b94bdc1ec107c92262716b073b3e816d4784fb | db1b14eec8c61a20374de9f9c2ddc6c9406a8c42 | 37f71e2c9f515834841826f4eb68ec33cfb2a1ff | ≥ 5.15.146, < 5.15.209 | ≥ 6.6.9, < 6.6.23 | ≥ 5.10.206, < 5.11 | ≥ 6.1.70, < 6.2 | 6.7

  • linux•linux_kernel

    ≥ 5.10.206, < 5.11 | ≥ 5.15.146, < 5.16 | ≥ 6.1.70, < 6.1.83 | ≥ 6.6.9, < 6.6.23 | ≥ 6.7, < 6.7.11 | ≥ 6.8, < 6.8.2

References (6)