EUVD-2026-31403
GHSA-ggv5-f87x-rf79
CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:A/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:A/V:X/RE:X/U:X
Lifecycle Timeline
4DescriptionNVD
An attacker sending tcp, il, rudp, rudp, or gre packets with a length less than the header size would trigger a kernel panic.
AnalysisAI
Remote denial-of-service in 9front (a fork of Plan 9 from Bell Labs) allows unauthenticated network attackers to trigger a kernel panic by sending malformed TCP, IL, RUDP, or GRE packets whose total length is shorter than the protocol header size. The flaw affects 9front Plan 9 4e prior to commit 70c97c334171c715df82774d1a47638abaca2db4 and carries a CVSS 4.0 score of 9.2 driven by high availability impact and automatable exploitation; no public exploit identified at time of analysis.
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RemediationAI
Within 24 hours: Identify all systems running 9front Plan 9 4e in your environment; if patching cannot be completed immediately, restrict network access or isolate from untrusted networks. Within 7 days: Deploy vendor patch commit 70c97c334171c715df82774d1a47638abaca2db4 to all affected systems. …
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External POC / Exploit Code
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