CVE-2026-89920: KVM: s390: Fix memory corruption by not reinjecting CK machine checks

Overview

Severity

High (CVSS 7.8)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Sep

Released

2026-09-17

Affected Products (1)

Other

• 21684-17084

Security Updates (1)

• Security Update

Revision History

• 2026-09-17: Information published.