CVE-2026-31499

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-31499
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix deadlock in l2cap_conn_del() l2cap_conn_del() calls cancel_delayed_work_sync() for both info_timer and id_addr_timer while holding conn->lock. However, the work functions l2cap_info_timeout() and l2cap_conn_update_id_addr() both acquire conn->lock, creating a potential AB-BA deadlock if the work is already executing when l2cap_conn_del() takes the lock. Move the work cancellations before acquiring conn->lock and use disable_delayed_work_sync() to additionally prevent the works from being rearmed after cancellation, consistent with the pattern used in hci_conn_del().

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/00fdebbbc557a2fc21321ff2eaa22fd70c078608 Patch
https://git.kernel.org/stable/c/3f26ecbd9cde621dd94be7ef252c7210b965a5c7 Patch
https://git.kernel.org/stable/c/d008460de352e534f6721de829b093368564ec66 Patch
https://git.kernel.org/stable/c/f7f35a4f7fd574f5889bb2e4b397e14cbb83f6da
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
History

14 May 2026, 15:16

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/f7f35a4f7fd574f5889bb2e4b397e14cbb83f6da -

28 Apr 2026, 14:01

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/00fdebbbc557a2fc21321ff2eaa22fd70c078608 - () https://git.kernel.org/stable/c/00fdebbbc557a2fc21321ff2eaa22fd70c078608 - Patch
References () https://git.kernel.org/stable/c/3f26ecbd9cde621dd94be7ef252c7210b965a5c7 - () https://git.kernel.org/stable/c/3f26ecbd9cde621dd94be7ef252c7210b965a5c7 - Patch
References () https://git.kernel.org/stable/c/d008460de352e534f6721de829b093368564ec66 - () https://git.kernel.org/stable/c/d008460de352e534f6721de829b093368564ec66 - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CPE cpe:2.3:o:linux:linux_kernel:6.14:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
CWE CWE-667
First Time Linux
Linux linux Kernel

22 Apr 2026, 14:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-04-22 14:16

Updated : 2026-05-14 15:16

NVD link : CVE-2026-31499

Mitre link : CVE-2026-31499

CVE.ORG link : CVE-2026-31499

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-667

Improper Locking