CVE-2023-52896

kernel: btrfs: fix race between quota rescan and disable leading to NULL pointer deref

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Severity

Moderate

Red Hat Product Security

4.7

CVSS 3.1

Review impact separately from score.

Published · August 21, 2024

Updated · June 26, 2026

Description

A flaw was found in the Linux kernel’s btrfs module. A race condition can occur when one task tries to start the quota rescan worker while another tries to disable quotas. This issue can cause a NULL pointer dereference and result in a denial of service.

Statement

The btrfs module is not built in the kernel shipped in Red Hat Enterprise Linux 8 and 9, so it is not affected by this vulnerability.

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 · 4.7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-476 · NULL Pointer Dereference