CVE-2026-80550: s390/vfio_ccw: Fix out of bounds check on CCW array

Overview

Severity

Medium (CVSS 5.5)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Aug

Released

2026-08-27

Last Updated

2026-10-02

EPSS Score

0.18% (percentile: 7.2%)

Affected Products (2)

Other

• 21684-17084
• 21892-17084

Security Updates (1)

• Security Update

Revision History

• 2026-08-27: Information published.
• 2026-09-05: Information published.
• 2026-09-23: Information published.
• 2026-09-23: Information published.
• 2026-09-24: Information published.
• 2026-10-02: Information published.