PT-2026-34404 · Linux · Linux Kernel
CVE-2026-31499
·
Published
2026-04-22
·
Updated
2026-07-24
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A deadlock can occur in the Bluetooth L2CAP component within the
l2cap conn del() function. This happens because l2cap conn del() calls cancel delayed work sync() for both info timer and id addr timer while holding the conn->lock. Since the work functions l2cap info timeout() and l2cap conn update id addr() also attempt to acquire conn->lock, an AB-BA deadlock may occur if the work is already executing when the lock is taken.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Improper Locking
Found an issue in the description? Have something to add? Feel free to write us 👾
Weakness Enumeration
Related Identifiers
Affected Products
Linux Kernel