CVE-2026-31499

medium Red Hat
CVSS v3 Base Score
7.0
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Characteristics
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Published: April 22, 2026 (22 days ago)
Last Modified: April 22, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the Linux kernel's Bluetooth L2CAP component. A deadlock can occur in the `l2cap_conn_del()` function when canceling delayed work, specifically `info_timer` and `id_addr_timer`. This happens because `l2cap_conn_del()` holds a lock while attempting to cancel work functions that also acquire the same lock, creating a circular waiting condition. This concurrency issue can lead to a Denial of Service (DoS), making the system unresponsive.

CWE

CWE-833

Affected Products

Red Hat Enterprise Linux 10Red Hat Enterprise Linux 6Red Hat Enterprise Linux 7Red Hat Enterprise Linux 8Red Hat Enterprise Linux 9

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 lore.kernel.org