gopacket: Multiple layer decoders panic on crafted packets (out-of-bounds/underflow) enabling unauthenticated remote DoS via DecodingLayerParser

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-65819
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-07 20:16:52 UTC
Updated2026-09-09 21:02:22 UTC
Descriptiongopacket 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.003610000 probability, percentile 0.293780000 (date 2026-09-10)

Problem Types: CWE-125 | CWE-400 | CWE-125 CWE-125: Out-of-bounds Read | CWE-400 CWE-400: Uncontrolled Resource Consumption

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Gopacket Gopacket affected <= 1.7.0 Not specified

References

ReferenceSourceLinkTags
github.com/gopacket/gopacket/security/advisories/GHSA-8mcr-459q-5mx2 [email protected] github.com
github.com/gopacket/gopacket/commit/210f25fb9b3ca1af2eb649936f78ad6991b6... [email protected] github.com
github.com/gopacket/gopacket/releases/tag/v1.7.0 [email protected] github.com
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