CVE-2026-23364

7.4 HIGH 0.4% exploit odds Fix listed Other OS & kernel

What it is

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().

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data exposure, data tampering.
Exploit odds: 0.4% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2026-03-25 11:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-10-15 02:18 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.4% in the next 30 days (EPSS).
Severity: 7.4 HIGH (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2026-03-25 11:16 UTC
Last modified: 2026-10-15 02:18 UTC
Exploit probability: 0.4% · EPSS, next 30 days
Record status: Modified

Affected

Linux Kernel < 6.1.167
Linux Kernel < 6.6.130
Linux Kernel < 6.12.78
Linux Kernel < 6.18.19
Linux Kernel < 6.19.7
Linux Kernel 5.15
Linux Kernel 7.0

Attack profile CVSS 3.1 · 7.4

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: None

Raw vector

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

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2026-23364.md and follow it. Check whether this project is affected by CVE-2026-23364. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record