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CVE-2024-27399

kernel: Bluetooth: l2cap: fix null-ptr-deref in l2cap_chan_timeout

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · May 13, 2024

Updated · August 19, 2026

Description

A flaw was found in the Linux kernel's Bluetooth L2CAP (Logical Link Control and Adaptation Protocol) component. A race condition between channel deletion and timeout handling can lead to a null-pointer dereference in the l2cap_chan_timeout function. A local attacker with low privileges could exploit this vulnerability, causing a kernel panic and resulting in a denial of service.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-476 · NULL Pointer Dereference