CVE-2026-45987

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 KVM (Kernel-based Virtual Machine) nSVM component of the Linux kernel. This vulnerability occurs when the interrupt shadow state is not correctly synchronized to the cached Virtual Machine Control Block (VMCB) after a Level 2 (L2) guest virtual machine (VM) execution. A local attacker with control over an L1 guest could potentially exploit this by manipulating the order of KVM API calls during VM state restoration. This could lead to a guest virtual CPU (vCPU) hang, resulting in a denial of service for the affected L2 guest.

CWE

CWE-367

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