CVE-2026-23364 HIGH

CVE-2026-23364: ksmbd: Compare MACs in constant time

Vendor Linux
Product Linux
Published March 25, 2026
Last update May 11, 2026
View on NVD All CVEs

CVSS base score

7.4/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: Compare MACs in constant time To prevent timing attacks, MAC comparisons need to be constant-time. Replace the memcmp() with the correct function, crypto_memneq().

Key dates

02Disclosure timeline

March 25, 2026 CVE published
May 11, 2026 Record updated