CVE-2026-80920: io_uring: defer eventfd signaling when queued from a wakeup handler

Overview

Severity

Low (CVSS 3.3)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Sep

Released

2026-09-11

EPSS Score

0.16% (percentile: 5.1%)

Affected Products (1)

Other

• 21684-17084

Security Updates (1)

• Security Update

Revision History

• 2026-09-11: Information published.