SB20260824217 - Race condition in Linux kernel kvm svm

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Main Vulnerability Database SB20260824217

SB20260824217 - Race condition in Linux kernel kvm svm

Published: August 24, 2026

Security Bulletin ID SB20260824217
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Race condition (CVE-ID: CVE-2026-74607)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a race condition in KVM SVM SEV handling for enc_context_owner and mirror_vms when processing KVM_CAP_VM_MOVE_ENC_CONTEXT_FROM and KVM_CAP_VM_COPY_ENC_CONTEXT_FROM operations. A local user can trigger concurrent VM move, copy, or destroy operations to cause a denial of service.

The issue involves list corruption in mirror VM tracking and incorrect kvm_put_kvm() handling during VM destruction.


Remediation

Install update from vendor's website.

References