CVE-2025-40204

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A flaw exists in the Linux kernel’s SCTP implementation related to Message Authentication Code (MAC) comparison. The MAC comparison was not performed in constant time, potentially allowing for timing attacks. To address this, the MAC comparison was corrected to be constant-time by utilizing an appropriate helper function.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.