CVE-2026-31426

medium Red Hat
CVSS v3 Base Score
5.8
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H
Attack Characteristics
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Confidentiality
Low
Integrity
Low
Availability
High
Published: April 13, 2026 (31 days ago)
Last Modified: April 13, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the Linux kernel's Advanced Configuration and Power Interface (ACPI) Embedded Controller (EC) subsystem. During the setup of the EC handler, if a probe deferral occurs on specific hardware, the system fails to properly deallocate resources. This oversight creates a use-after-free vulnerability, allowing an unprivileged local attacker to trigger a system crash, resulting in a Denial of Service (DoS). The attacker can exploit this by performing certain system file system (sysfs) reads that interact with EC OpRegion fields.

CWE

CWE-825

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