CVE-2021-47116

kernel: ext4: fix memory leak in ext4_mb_init_backend on error path.

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Severity

Low

Red Hat Product Security

4.7

CVSS 3.1

Review impact separately from score.

Published · March 15, 2024

Updated · November 21, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

ext4: fix memory leak in ext4_mb_init_backend on error path.

Fix a memory leak discovered by syzbot when a file system is corrupted with an illegally large s_log_groups_per_flex.

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-402 · Transmission of Private Resources into a New Sphere ('Resource Leak')