CVE-2026-31447

medium Red Hat
CVSS v3 Base Score
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Characteristics
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Published: April 22, 2026 (22 days ago)
Last Modified: April 22, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the `ext4` filesystem component of the Linux kernel. This vulnerability occurs when a local user attempts to mount an `ext4` filesystem that is configured with `bigalloc` and a non-zero `s_first_data_block` value, a configuration that is not supported. The consequence is a Denial of Service (DoS), as the system will reject the mount operation, preventing access to the filesystem.

CWE

CWE-1288

Affected Products

Red Hat Enterprise Linux 10Red Hat Enterprise Linux 6Red Hat Enterprise Linux 7Red Hat Enterprise Linux 8Red Hat Enterprise Linux 9

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 lore.kernel.org