Update
Lightning Labs Ships LND Mitigation for Linux Kernel Flaw
Bitcoin Core and Lightning developer Matt Corallo highlighted a critical Linux kernel vulnerability CVE-2026-98432 affecting the IPv4 TCP handshake code with a CVSS score of 9.8. Anthropic’s Frontier Red Team showed it could be exploited remotely as a root exploit. Lightning Labs responded by releasing lnd v0.21.6-beta and v0.20.7-beta, which disable MPTCP listeners by default to mitigate the exploit path. The project noted that only a patched kernel fully resolves the issue.