Bug 2467711 (CVE-2026-42285) - CVE-2026-42285 github.com/osrg/gobgp: golang: GoBGP: Denial of Service due to specially crafted BGP UPDATE message
Summary: CVE-2026-42285 github.com/osrg/gobgp: golang: GoBGP: Denial of Service due to...
Keywords:
Status: NEW
Alias: CVE-2026-42285
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
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Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-07 13:02 UTC by OSIDB Bzimport
Modified: 2026-07-07 14:57 UTC (History)
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Description OSIDB Bzimport 2026-05-07 13:02:01 UTC 
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.
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