CVE-2026-46076: KVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1

Overview

Severity

High (CVSS 7)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-May

Released

2026-05-28

Last Updated

2026-06-28

EPSS Score

0.12% (percentile: 2.3%)

Affected Products (3)

Open Source Software

• azl3 kernel 6.6.139.1-1 on Azure Linux 3.0

Other

• 21443-17084
• 21474-17084

Revision History

• 2026-05-28: Information published.
• 2026-05-28: Information published.
• 2026-05-29: Information published.
• 2026-06-17: Information published.
• 2026-06-28: Information published.