CVE-2026-46273

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: June 3, 2026 (37 days ago)
Last Modified: June 3, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the Linux kernel's ibmveth driver. This vulnerability occurs when physical adapters on Power systems attempt to perform Generic Segmentation Offload (GSO) with a Maximum Segment Size (MSS) less than 224 bytes. A remote attacker could exploit this by sending specially crafted network packets, leading to the adapter freezing and a complete Denial of Service (DoS) for all network traffic until a manual reset.

CWE

CWE-1284

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