Vulnerability in Linux
CVE-2026-23364
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().
EPSS: 0.001 (16.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Linux — versions e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9, 5.15, 0
References
- git.kernel.org/stable/c/cd52a0e309659537048a864211abc3ea4c5caa63
- git.kernel.org/stable/c/307afccb751f542246bd5dc68a2c1ffe1a78418c
- git.kernel.org/stable/c/2cdc56ed67615ba0921383a688f24415ebe065f3
- git.kernel.org/stable/c/93c0a22fec914ec4b697e464895a0f594e29fb28
- git.kernel.org/stable/c/f4588b85efd6007d46b80aa1b9fb746628ffb3dc
- git.kernel.org/stable/c/c5794709bc9105935dbedef8b9cf9c06f2b559fa
Frequently asked questions
- What is CVE-2026-23364?
- CVE-2026-23364 is a high-severity vulnerability in Linux. CVSS score: 7.4/10. Published 2026-03-25.
- How severe is CVE-2026-23364?
- High severity. CVSS v3 base score is 7.4 out of 10.