Vulnerability in Linux

CVE-2025-40204

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.

EPSS: 0.002 (9.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

  • Linux — versions 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, 2.6.12, 0

References

Frequently asked questions

What is CVE-2025-40204?
CVE-2025-40204 is a high-severity vulnerability in Linux. CVSS score: 8.1/10. Published 2025-11-12.
How severe is CVE-2025-40204?
High severity. CVSS v3 base score is 8.1 out of 10.