CVE-2026-80620

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
EPSS Score
0.2%
Exploitation probability in 30 days
Top 93% most likely to be exploited
Attack Characteristics
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Published: August 28, 2026 (9 days ago)
Last Modified: August 28, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the Linux kernel. During the error handling of Message Signaled Interrupts eXtended (MSI-X) region setup, the kernel attempts to unmap an already freed memory region. This double unmap operation on a null pointer can lead to a kernel warning or crash. A local attacker could potentially exploit this vulnerability to cause a system-wide 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