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Vulnerability record · CVE-2025-40204 · published 12 November 2025

CVE-2025-40204: In the Linux kernel, the following vulnerability has been resolved: sctp: Fix MAC comparison to be constant-t…

In the Linux kernel, the following vulnerability has been resolved: sctp: Fix MAC comparison to be constant-time To prevent timing attacks, MACs need to be compared in constant time. Use the appropriate helper function for this.

8.1 CVSS 3.1 High EPSS 0.43% · top 64.9% Deferred
8.1CVSS 3.1 base score
0.43%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
8References
30 Jul 2026Last modified by NVD

Description

In the Linux kernel, the following vulnerability has been resolved: sctp: Fix MAC comparison to be constant-time To prevent timing attacks, MACs need to be compared in constant time. Use the appropriate helper function for this.

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

References

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Source: NIST National Vulnerability Database (record CVE-2025-40204), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.