CVE-2026-31691

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 27, 2026 (17 days ago)
Last Modified: April 27, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the Linux kernel's igb network driver. When an AF_XDP zero-copy application terminates abruptly, the network driver's NAPI polling mechanism can become stuck. This prevents the igb_down() function from completing, leading to the TX queue becoming permanently stalled. This can result in a Denial of Service (DoS) condition, making the network interface unresponsive.

CWE

CWE-833

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