Techub reported that @TheBlueMatt urged users running lnd, or any Go-based service exposed to the internet, to shut down their nodes immediately until they either patch the kernel or disable MPTCP. In the warning he cited, Bitcoin community members running lnd with open ports were told to take nodes offline before fixing or mitigating the Linux kernel MPTCP flaw tracked as CVE-2026-98432. He also said Go is one of the few languages that enables MPTCP by default, which means the issue is not limited to lnd deployments alone. TheBlueMatt added that the problem is not a vulnerability in lnd itself, but one that operators of internet-facing services should still treat seriously until mitigations are in place.
According to Techub, @TheBlueMatt said users running lnd, or any Go service that accepts internet connections, should shut down their nodes immediately until they patch the kernel or disable MPTCP.
In the alert he cited, Bitcoin community members running lnd with open ports were told to take their nodes offline before patching or mitigating the Linux kernel MPTCP vulnerability CVE-2026-98432.
He also said Go is one of the few languages that enables MPTCP by default, so operators of internet-facing services should pay attention. He added that the issue is not a vulnerability in lnd itself.
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