| Name | CVE-2026-41642 |
| Description | GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. In version 4.3.0, a remote Denial of Service (DoS) vulnerability exists in GoBGP due to a nil pointer dereference. When a malformed BGP UPDATE message contains an unrecognized Path Attribute marked as "Well-known," the daemon fails to interrupt the message handling flow. This results in an illegal memory access and a full process crash (panic). This issue has been patched in version 4.4.0. |
| 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 | fixed |
| bookworm | 3.10.0-1 | fixed |
| trixie | 3.36.0-2 | fixed |
| 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 | bullseye | (not affected) | | | |
| gobgp | source | bookworm | (not affected) | | | |
| gobgp | source | trixie | (not affected) | | | |
| gobgp | source | (unstable) | 4.4.0-1 | | | |
Notes
[trixie] - gobgp <not-affected> (Vulnerable code not present, introduced in 4.3.0)
[bookworm] - gobgp <not-affected> (Vulnerable code not present, introduced in 4.3.0)
[bullseye] - gobgp <not-affected> (Vulnerable code not present, introduced in 4.3.0)
https://github.com/osrg/gobgp/security/advisories/GHSA-7235-89m6-f4px
https://github.com/osrg/gobgp/commit/215aee08db47e55f4f8a7741e516951f76a959b4 (v4.4.0)