Numeric Errors Affecting gobgp package, versions <4.4.0-1


Severity

Recommended
0.0
low
0
10

Based on Debian security rating.

Threat Intelligence

EPSS
0.41% (33rd percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-GOBGP-15878854
  • published3 Apr 2026
  • disclosed30 Mar 2026

Introduced: 30 Mar 2026

CVE-2026-5123  (opens in a new tab)
CWE-189  (opens in a new tab)
CWE-193  (opens in a new tab)

How to fix?

Upgrade Debian:unstable gobgp to version 4.4.0-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gobgp package and not the gobgp package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1