Bug 2512626 (CVE-2026-65819)

Summary: CVE-2026-65819 github.com/gopacket/gopacket: gopacket: Remote Denial of Service via crafted packet processing
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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Priority: high    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in gopacket, a Go library for packet processing. Multiple layer decoders in gopacket use attacker-controlled lengths, counts, or offsets without proper validation against packet buffers. A remote, unauthenticated attacker can exploit this by sending a specially crafted packet, which, when decoded, triggers an unrecovered panic. This can lead to a remote Denial of Service (DoS) condition, making the affected system unavailable.
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Description OSIDB Bzimport 2026-08-07 19:41:33 UTC
gopacket provides packet processing capabilities for Go. Through version 1.7.0, multiple layer decoders use attacker-controlled lengths, counts, or offsets before validating them against packet buffers, allowing a crafted packet decoded through DecodingLayerParser or DecodeFromBytes to trigger an unrecovered panic and remotely deny service.  A patch commit is available at 210f25f.