| Name | CVE-2026-5123 |
| Description | A weakness has been identified in osrg GoBGP up to 4.3.0. This impacts the function DecodeFromBytes of the file pkg/packet/bgp/bgp.go. Executing a manipulation of the argument data[1] can lead to off-by-one. The attack may be launched remotely. Attacks of this nature are highly complex. The exploitability is said to be difficult. This patch is called 67c059413470df64bc20801c46f64058e88f800f. A patch should be applied to remediate this issue. |
| 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) |
| Debian Bugs | 1132653 |
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 | 4.4.0-1 | 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) | 4.4.0-1 | | | 1132653 |
Notes
[bullseye] - gobgp <postponed> (Limited support, follow bookworm security updates)
https://github.com/osrg/gobgp/pull/3342
Fixed by: https://github.com/osrg/gobgp/commit/67c059413470df64bc20801c46f64058e88f800f (v4.4.0)