high7.5
CVE-2026-54332
GoPacket's sFlow ExtendedGatewayFlow decoder: unbounded attacker-controlled allocation (104-byte UDP datagram -> up to 16 GiB make) -> unauthenticated remote DoS
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/gopacket/gopacket | <= 1.6.0 | 1.6.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Gopacket | Gopacket | before 1.6.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-g6v3-7xmc-w563
- https://github.com/gopacket/gopacket/security/advisories/GHSA-g6v3-7xmc-w563
- https://github.com/gopacket/gopacket/commit/76119086f5936aacd7088bdf97d565501bb6c4cc
- https://github.com/gopacket/gopacket/releases/tag/v1.6.1