CVE-2024-40981

kernel: batman-adv: bypass empty buckets in batadv_purge_orig_ref()

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · July 12, 2024

Updated · February 2, 2026

Description

A vulnerability in the Linux kernel's batman-adv subsystem, specifically in the batadv_purge_orig_ref() function, caused soft lockups due to inefficient handling of empty data buckets. This led to CPU stalls, where the system became unresponsive for extended periods.

Statement

Red Hat Enterprise Linux is not vulnerable to this CVE, as it does not affect the versions or configurations of the Linux kernel used in its distributions.

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-833 · Deadlock