| Name | CVE-2026-41643 |
| Description | GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. Prior to version 4.3.0, a remote Denial of Service (DoS) vulnerability exists in GoBGP where a malformed BGP UPDATE message can trigger a runtime error: index out of range panic. This occurs during the processing of 4-byte AS attributes when the message structure causes an internal slice index shift that is not properly handled. This issue has been patched in version 4.3.0. |
| Source | CVE (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 Package | Release | Version | Status |
|---|
| gobgp (PTS) | bullseye | 2.25.0-2 | vulnerable |
| bookworm | 3.10.0-1 | vulnerable |
| trixie | 3.36.0-2 | vulnerable |
| forky, sid | 4.5.0-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| gobgp | source | (unstable) | 4.3.0-1 | | | |
Notes
[trixie] - gobgp <no-dsa> (Minor issue)
[bookworm] - gobgp <no-dsa> (Minor issue)
[bullseye] - gobgp <postponed> (Limited support, follow bookworm security updates)
https://github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2q
https://github.com/osrg/gobgp/issues/3308
https://github.com/osrg/gobgp/commit/9fe96a9b92918e782c2d054e305fc96b48f3e8e4 (v4.3.0)