CVE-2026-46059

kernel: KVM: nSVM: Always use NextRIP as vmcb02's NextRIP after first L2 VMRUN

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · May 27, 2026

Updated · June 28, 2026

Description

A flaw was found in the Linux kernel's KVM (Kernel-based Virtual Machine) nSVM module. This vulnerability occurs when running nested virtual machines (L2 guests) with NRIPS (Next Instruction Pointer Suppression) disabled. After an L2 guest's initial run, the NextRIP value in vmcb02 may not be correctly updated, potentially leading to incorrect program execution flow within the virtualized environment. This issue could affect the stability or integrity of the guest system.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-841 · Improper Enforcement of Behavioral Workflow