gobgp: GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language
CVE-2026-42285 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-42285, released May 27, 2026. It is not reported as exploited. Patch Radar priority: High.
GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. In version 4.4.0, an unauthenticated remote BGP peer can trigger a fatal panic in GoBGP by sending a specially crafted BGP UPDATE message. When the server receives a message with inconsistent attribute lengths, it improperly handles the internal state transition to a "withdraw" action, leading to a nil pointer dereference in the AdjRib.Update function. This causes the entire GoBGP process to crash, resulting in a complete loss of service availability. This issue has been patched in version 4.5.0.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| gobgp · Debian 14 | 4.5.0-1 | DEBIAN-CVE-2026-42285 | May 27, 2026 |
| govulncheck-vulndb · opensuse-leap 16.0 | 0.0.20260727T201416-160000.1.1 | OPENSUSE-SU-2026:21551-1 | Aug 10, 2026 |
| govulncheck-vulndb · sles 16.0 | 0.0.20260727T201416-160000.1.1 | SUSE-SU-2026:23227-1 | Aug 10, 2026 |
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