Linux Kernel Vulnerability in mptcp by Linux Foundation
CVE-2025-68221

Currently unrated

Key Information:

Vendor: Linux
Status: Linux
Vendor: CVE Published:; 16 December 2025

What is CVE-2025-68221?

A logic issue has been identified in the Linux kernel related to the MultiPath TCP (mptcp) implementation. This flaw affects the address removal process by incorrectly handling the decrement operation of the address counter. Specifically, the existing code only decrements the counter when it is found to be zero, which is an abnormal condition, thereby overlooking normal address removals when the counter is above zero. This could lead to discrepancies in address management, potentially impacting network functionality and overall system integrity.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch