high7.5
CVE-2026-54345
GoPacket's Diameter AVP decoder: uint32 underflow on vendor header size leads to unbounded ~4 GiB allocation (unauthenticated remote DoS)
Impact
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.
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-6r28-9ppf-4hj5
- https://github.com/gopacket/gopacket/security/advisories/GHSA-6r28-9ppf-4hj5
- https://github.com/gopacket/gopacket/commit/145859d0eaee1a6f5925ffb93851c976449c3311
- https://github.com/gopacket/gopacket/releases/tag/v1.6.1