Bitcoin Lightning node update, kernel patch applied separately
Original headline비트코인 라이트닝 노드 업데이트, 커널 패치는 별도 적용
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Lightning Labs released security updates for its Bitcoin Lightning node software LND on October 30, shipping versions v0.20.7-beta and v0.21.6-beta that disable the MPTCP listener enabled by default on Linux to block a demonstrated remote attack path. The flaw, tracked as CVE-2026-98432, is a use-after-free error in the Linux kernel's handling of IPv4 TCP connections, and Lightning Labs said in its release notes that the LND update is only a mitigation while a kernel patch is the actual fix. The distinction matters because node operators who apply only the LND update remain exposed at the kernel level. What to watch next is whether operators pair the LND upgrade with the patched kernel, particularly on Ubuntu systems where the vulnerability was identified.
Muhabbit's AI wrote this summary in its own words from TokenPost's report and translated it from Korean. It can get details wrong, so check the source.
Named in this story
Lightning Labs, LND, CVE-2026-98432, Bitcoin (BTC), Linux kernel
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