CVE-2026-31422

medium Red Hat
CVSS v3 Base Score
4.7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Characteristics
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
None
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 networking scheduler (net/sched) component, specifically within the flow classifier (cls_flow). A local user could exploit this vulnerability by creating a flow filter without a fully qualified baseclass on a shared block. This action causes a null pointer dereference, which can lead to a system crash, resulting in a Denial of Service (DoS).

CWE

CWE-476

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