CVE-2026-92695

NameCVE-2026-92695
DescriptionFastNetMon is a high-performance DDoS detector and sensor. In version 1.2.9 and earlier, the live parse_packet() callback in src/pcap_plugin/pcap_collector.cpp is registered through pcap_loop and processes captured frames when pcap = on without checking packethdr->caplen. A short frame or an attacker-controlled IPv4 header length can make the parser dereference IP or transport headers beyond the captured bytes, causing an out-of-bounds read and process termination. No fixed release is available as of this review.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
fastnetmon (PTS)bookworm, bookworm (security)1.2.4-2+deb12u1vulnerable
trixie (security), trixie1.2.9-0+deb13u1vulnerable
forky, sid1.2.9-1vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
fastnetmonsource(unstable)(unfixed)

Notes

https://github.com/pavel-odintsov/fastnetmon/security/advisories/GHSA-c27c-943r-vr8h
Fixed by: https://github.com/pavel-odintsov/fastnetmon/commit/5d0ee2d25fddb2db746ce4ce3326a589a2afef40

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