CVE-2026-43384

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

Description A timing attack issue exists in the TCP Authentication Option (TCP-AO) implementation. The Message Authentication Code (MAC) comparison was not performed in constant-time, which could allow an attacker to deduce information based on the time taken to validate the MAC.

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