Matt Corallo Flags Critical Linux Kernel Flaw; Lightning Labs Ships LND Mitigation

Matt Corallo, a key developer for Bitcoin Core and Lightning, recently disclosed a critical security flaw, CVE-2026-98432, within the Linux kernel. This vulnerability, a use-after-free bug in the IPv4 TCP handshake code, carries a severe CVSS score of 9.8, indicating its high potential for exploitation. In response to this significant threat, Lightning Labs promptly released a mitigation for its Lightning Network Daemon (LND) software. The flaw could potentially affect various systems relying on the Linux kernel, including nodes operating on the Lightning Network. This incident underscores the ongoing importance of vigilant security research and rapid response within the cryptocurrency ecosystem to safeguard against fundamental infrastructure vulnerabilities.