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CVE-2026-80585 mptcp: fastopen: only mark MPTFO subflows with SYN data

🗓️ 26 Aug 2026 14:37:40Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 4 Views

Stale MPTFO flag in Linux kernel MPTCP fastopen causes state-confusion in check_fully_established.

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28 Aug 2026 03:47Current
5.6Medium risk
Vulners AI Score5.6
CVSS 3.19.4
4