{"id":"CVE-2026-54332","aliases":["GHSA-g6v3-7xmc-w563","GO-2026-6122"],"url":"https://o3.security/vulnerability/CVE-2026-54332","summary":"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.","published":"2026-07-28T16:17:48.796Z","modified":"2026-08-18T15:10:58.331019623Z","cvss":null,"epss":{"score":0.00429,"percentile":0.35747,"asOf":"2026-08-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/gopacket/gopacket","fixedVersion":"1.6.1"}],"fix":{"url":"https://github.com/gopacket/gopacket/commit/76119086f5936aacd7088bdf97d565501bb6c4cc","label":"gopacket/gopacket@7611908"},"references":[{"type":"WEB","url":"https://github.com/gopacket/gopacket/releases/tag/v1.6.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54332.json"},{"type":"ADVISORY","url":"https://github.com/gopacket/gopacket/security/advisories/GHSA-g6v3-7xmc-w563"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54332"},{"type":"FIX","url":"https://github.com/gopacket/gopacket/commit/76119086f5936aacd7088bdf97d565501bb6c4cc"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-18T15:10:58.331019623Z"}}