CVE-2026-43109: x86: shadow stacks: proper error handling for mmap lock

Overview

Severity

High (CVSS 7.1)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-May

Released

2026-05-07

EPSS Score

0.02% (percentile: 4.1%)

Affected Products (1)

Other

• 21308-17084

Revision History

• 2026-05-07: Information published.