CVE-2026-54332

GoPacket's sFlow ExtendedGatewayFlow decoder: unbounded attacker-controlled allocation (104-byte UDP datagram -> up to 16 GiB make) -> unauthenticated remote DoS

Details

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.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54332.json"
}

References

Affected packages

Git / github.com/gopacket/gopacket

Affected ranges

Type

GIT

Repo

https://github.com/gopacket/gopacket

Events

Introduced

Fixed

76119086f5936aacd7088bdf97d565501bb6c4cc

Database specific

Show details

{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "1.6.1"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "fixed": "76119086f5936aacd7088bdf97d565501bb6c4cc"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "v1.6.1",
            "range": [
                {
                    "fixed": "76119086f5936aacd7088bdf97d565501bb6c4cc"
                }
            ],
            "source": "REFERENCES_TAG"
        },
        {
            "cpe": "cpe:2.3:a:gopacket:gopacket:*:*:*:*:*:go:*:*",
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "1.6.1"
                }
            ],
            "source": "CPE_RANGE"
        }
    ]
}

Affected versions

v.*

v.1.3.0

v0.*

v0.1.0

v1.*

v1.0.0

v1.1.0

v1.1.1

v1.2.0

v1.3.0

v1.3.1

v1.4.0

v1.5.0

v1.6.0

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-54332.json"