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Vulnerability record · CVE-2026-23364 · published 25 March 2026

CVE-2026-23364: Linux kernel vulnerability

Linux · Linux Kernel

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().

7.4 CVSS 3.1 High EPSS 0.39% · top 69.4%
7.4CVSS 3.1 base score
0.39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
7References
19 Jun 2026Last modified by NVD

Description

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().

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/2cdc56ed67615ba0921383a688f24415ebe065f3 Patch
https://git.kernel.org/stable/c/307afccb751f542246bd5dc68a2c1ffe1a78418c Patch
https://git.kernel.org/stable/c/8a665d733940592e671ec6afadcd0be80a091a80
https://git.kernel.org/stable/c/93c0a22fec914ec4b697e464895a0f594e29fb28 Patch
https://git.kernel.org/stable/c/c5794709bc9105935dbedef8b9cf9c06f2b559fa Patch
https://git.kernel.org/stable/c/cd52a0e309659537048a864211abc3ea4c5caa63 Patch
https://git.kernel.org/stable/c/f4588b85efd6007d46b80aa1b9fb746628ffb3dc Patch

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Source: NIST National Vulnerability Database (record CVE-2026-23364), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.