Source: gobgp
Version: 4.4.0-1
Severity: important
Tags: security upstream
X-Debbugs-Cc: [email protected], Debian Security Team <[email protected]>

Hi,

The following vulnerability was published for gogbp.

CVE-2026-42285[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-42285
    https://www.cve.org/CVERecord?id=CVE-2026-42285
[1] https://github.com/osrg/gobgp/security/advisories/GHSA-p3w2-64xm-833j

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

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