CVE-2026-77159: Libvirt: unsafe chown in qemutpmemulatorpreparehost() allows arbitrary file ownership change via symlink

Overview

Severity

Medium (CVSS 5.5)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Sep

Released

2026-09-17

EPSS Score

0.16% (percentile: 5.8%)

Affected Products (1)

Other

• 21815-17084

Security Updates (1)

• Security Update

Revision History

• 2026-09-17: Information published.