CVE-2026-46014

low 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: May 27, 2026 (44 days ago)
Last Modified: May 27, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the Linux kernel's Kernel-based Virtual Machine (KVM) and Secure Virtual Machine (SVM) components. This vulnerability is due to missing save and restore handling for Last Branch Record (LBR) Model Specific Registers (MSRs) and MSR_IA32_DEBUGCTLMSR. A local attacker with access to a virtual machine could potentially exploit this to cause incorrect state restoration of LBRs in nested virtualization environments. This could lead to unexpected behavior or information inconsistencies across virtual machines.

CWE

CWE-372

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