CVE-2026-31613: smb: client: fix OOB reads parsing symlink error response

Overview

Severity
High (CVSS 7)
CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U
Exploit Status
Not Exploited
Patch Tuesday
2026-Apr
Released
2026-04-26
Last Updated
2026-05-22
EPSS Score
0.07% (percentile: 21.9%)

Affected Products (5)

Other

  • 21332-17084
  • 21308-17084
  • 21344-17084

Open Source Software

  • azl3 kernel 6.6.130.1-3 on Azure Linux 3.0
  • azl3 kernel 6.6.134.1-2 on Azure Linux 3.0

Revision History

  • 2026-04-26: Information published.
  • 2026-04-27: Information published.
  • 2026-04-29: Information published.
  • 2026-04-29: Information published.
  • 2026-05-06: Information published.
  • 2026-05-11: Information published.
  • 2026-05-17: Information published.
  • 2026-05-22: Information published.