Bug 2467703 (CVE-2026-41642) - CVE-2026-41642 github.com/osrg/gobgp: golang: GoBGP: Denial of Service via malformed BGP UPDATE message
Summary: CVE-2026-41642 github.com/osrg/gobgp: golang: GoBGP: Denial of Service via ma...
Keywords:
Status: NEW
Alias: CVE-2026-41642
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 13:01 UTC by OSIDB Bzimport
Modified: 2026-07-07 14:56 UTC (History)
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Description OSIDB Bzimport 2026-05-07 13:01:32 UTC 
GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. In version 4.3.0, a remote Denial of Service (DoS) vulnerability exists in GoBGP due to a nil pointer dereference. When a malformed BGP UPDATE message contains an unrecognized Path Attribute marked as "Well-known," the daemon fails to interrupt the message handling flow. This results in an illegal memory access and a full process crash (panic). This issue has been patched in version 4.4.0.
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