CVE-2026-64247: KVM: x86: hyper-v: Bound the bank index when querying sparse banks

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Jul

Released

2026-07-26

Last Updated

2026-08-14

EPSS Score

0.11% (percentile: 1.6%)

Affected Products (1)

Other

• 21474-17084

Revision History

• 2026-07-26: Information published.
• 2026-08-07: Information published.
• 2026-08-14: Information published.
• 2026-08-14: Information published.
• 2026-08-14: Information published.
• 2026-08-14: Information published.