CVE-2024-42239

kernel: bpf: Fail bpf_timer_cancel when callback is being cancelled

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · August 7, 2024

Updated · November 21, 2025

Description

A denial of service flaw was found in the linux kernel based on mutual exclusion locking. Two bpf_timer_cancel calls wwill wait for the other callback to finish executing, resulting in a deadlock situation.

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-99 · Improper Control of Resource Identifiers ('Resource Injection')