Riskcovery

CVE-2026-54345

GoPacket's Diameter AVP decoder: uint32 underflow on vendor header size leads to unbounded ~4 GiB allocation (unauthenticated remote DoS)

State
Published
Severity
6.9 Medium
Published
Jul 28, 2026
Updated
Jul 28, 2026
Reserved
Jun 12, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
4.06.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:NGitHub_M

Weaknesses

  • CWE-191 Integer Underflow (Wrap or Wraparound)
  • CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

ProductVersions
gopacketgopacket
  • < 1.6.1Affected

References

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