CVE-2024-57976

kernel: btrfs: do proper folio cleanup when cow_file_range() failed

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Severity

Moderate

Red Hat Product Security

4.7

CVSS 3.1

Review impact separately from score.

Published · February 27, 2025

Updated · October 21, 2026

Description

A flaw was found in the Linux kernel btrfs delalloc path. When cow_file_range() fails, the folio is not cleaned up and a later COW fixup crashes the kernel. A local user of a btrfs filesystem can trigger that failure path.

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-459 · Incomplete Cleanup