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Fencer Intel
no cvss —

GO-2026-6237 json

Denial of service via malformed IPv4 packet in github.com/insomniacslk/dhcp

published 2mo ago modified 2mo ago

cvss
—
not scored
cisa kev
Not listed
not in CISA's catalog
epss
—
no score, EPSS covers CVEs only
public exploits
0
none known

Summary

In github.com/insomniacslk/dhcp/dhcpv4/nclient4, BroadcastRawUDPConn.ReadFrom does not validate that the IPv4 payload length is sufficient to hold a UDP header before calculating the DHCP payload length. A frame with an IPv4 total-length field specifying fewer than eight payload bytes results in a negative DHCP length, causing a panic in buf.Consume due to a negative slice bound.

Patch / fix

  • go github.com/insomniacslk/dhcp 0.0.0-20260719225207-c76316d4aa82

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Affected packages

ecosystem package affected fixed in
go github.com/insomniacslk/dhcp
<0.0.0-20260719225207-c76316d4aa82
0.0.0-20260719225207-c76316d4aa82

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.