CVE-2025-43972

NameCVE-2025-43972
DescriptionAn issue was discovered in GoBGP before 3.35.0. An attacker can cause a crash in the pkg/packet/bgp/bgp.go flowspec parser by sending fewer than 20 bytes in a certain context.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, 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
gobgp (PTS)bullseye2.25.0-2vulnerable
bookworm3.10.0-1vulnerable
sid, trixie3.36.0-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
gobgpsource(unstable)3.35.0-1

Notes

[bullseye] - gobgp <postponed> (Limited support, minor issue, DoS, follow bookworm DSAs/point-releases)
Fixed by: https://github.com/osrg/gobgp/commit/ca7383f450f7b296c5389feceef2467de5ab6e5a (v3.35.0)

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