CVE-2026-54345
HighCVSS 7.5Exploitation Probability (EPSS)
Low risk37th percentile - higher than 37% of all known CVEs
Summary
The gopacket library for Go version 1.6.0 and earlier has a vulnerability in the Diameter AVP decoder. An attacker can control the Length field in an AVP, causing an unsigned 32-bit underflow and allocation of about 4 GiB memory. Two such messages can cause OOM and denial of service.
Risk Assessment
An unauthenticated remote attacker can cause memory exhaustion and denial of service (DoS) by sending specially crafted packets.
Recommendation
Update gopacket to version 1.6.1 or later.
Other vulnerabilities in gopacket
See all- CVE-2026-65819High
gopacket 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.
- CVE-2026-54332High
The gopacket library for Go version 1.6.0 and earlier has a vulnerability in the sFlow ExtendedGatewayFlow decoder. An attacker controls 32-bit community and AS path member counts, leading to allocation of up to 16 GiB memory from a 104-byte UDP datagram, causing denial of service.
Original NVD description (English source)
gopacket provides packet processing capabilities for Go. In version 1.6.0 and earlier, the Diameter AVP decoder computes an AVP data length by subtracting a fixed header size from an attacker-controlled AVP Length field, so a vendor-flagged AVP whose Length is smaller than the 12-byte header underflows the unsigned 32-bit value and drives an unbounded allocation of roughly 4 GiB, and two such messages in succession OOM-kill a collector, causing an unauthenticated remote denial of service. This issue is fixed in version 1.6.1.