CVE-2026-31452

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 Linux kernel's ext4 filesystem. A local user could exploit a vulnerability where the `truncate()` function, when used to expand a file beyond its inline data capacity, fails to properly convert the file to extent-based storage. This inconsistency can lead to a kernel crash (BUG_ON) if a subsequent write operation, such as `sendfile()`, attempts to write data to the oversized inline file. This issue results in a denial of service.

CWE

CWE-130

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