CVE-2026-31478: ksmbd: replace hardcoded hdr2_len with offsetof() in smb2_calc_max_out_buf_len()

Overview

Severity
Critical (CVSS 9.8)
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploit Status
Not Exploited
Patch Tuesday
2026-Apr
Released
2026-04-23
Last Updated
2026-04-30
EPSS Score
0.50% (percentile: 41.2%)

Affected Products (1)

Open Source Software

  • cbl2 kernel 5.15.202.1-1 on CBL Mariner 2.0

Revision History

  • 2026-04-23: Information published.
  • 2026-04-23: Information published.
  • 2026-04-24: Information published.
  • 2026-04-29: Information published.
  • 2026-04-29: Information published.
  • 2026-04-30: Information published.