CVE-2026-31590

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
0.0%
Exploitation probability in 30 days
Top 95% 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: April 24, 2026 (20 days ago)
Last Modified: April 24, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the Linux kernel, specifically within the Kernel-based Virtual Machine (KVM) subsystem's Secure Encrypted Virtualization (SEV) feature. A local user could exploit this vulnerability by providing an excessively large memory region size when using the KVM_MEMORY_ENCRYPT_REG_REGION command. This action could trigger a kernel warning, potentially leading to system instability or consuming excessive system resources. The primary impact of this flaw is a Denial of Service (DoS), where legitimate system operations could be disrupted.

CWE

CWE-190

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