gobgp: A weakness has been identified in osrg GoBGP up to 4.3.0
CVE-2026-5123 is fixed in gobgp on 1 platform by DEBIAN-CVE-2026-5123 (version 4.4.0-1), released March 30, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| gobgp · Debian 14 | 4.4.0-1 | DEBIAN-CVE-2026-5123 | Mar 30, 2026 |
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