CVE-2026-54332

HighCVSS 7.5/10Last modified Aug 5, 2026

Description

gopacket provides packet processing capabilities for Go. In version 1.6.0 and earlier, the sFlow ExtendedGatewayFlow decoder in layers/sflow.go reads an attacker-controlled 32-bit community count and AS path member count and sizes a slice allocation from those counts without bounding them against the bytes remaining in the datagram, so a 104-byte UDP datagram can drive an allocation of up to 16 GiB and cause an unauthenticated remote denial of service. This issue is fixed in version 1.6.1.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-770

Affected software

Vendor	Product	Versions
gopacket	gopacket	< 1.6.1

References

https://github.com/gopacket/gopacket/commit/76119086f5936aacd7088bdf97d565501bb6c4ccPatch
https://github.com/gopacket/gopacket/releases/tag/v1.6.1Release Notes
https://github.com/gopacket/gopacket/security/advisories/GHSA-g6v3-7xmc-w563Exploit, Third Party Advisory
https://github.com/gopacket/gopacket/security/advisories/GHSA-g6v3-7xmc-w563Exploit, Third Party Advisory

Timeline

Published: Jul 28, 2026
Last modified: Aug 5, 2026
NVD status: Analyzed

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