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TI-2026-39226 Aliases CVE-2026-54332GHSA-g6v3-7xmc-w563

Resource allocation without limits in gopacket

Priority HIGH 70CWE-770Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-770.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0079 56th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed gopacket (gopacket): 1.6.1github.com/gopacket/gopacket (Go): 1.6.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
gopacketgopacketbefore 1.6.11.6.1Patch availableCNA
—github.com/gopacket/gopacket (Go)before 1.6.11.6.1Patch availableGHSA-g6v3-7xmc-w563
  • gopacket Vendorgopacket Affected before 1.6.1 Fixed in 1.6.1 Patch available CNA
  • github.com/gopacket/gopacket (Go) Vendor— Affected before 1.6.1 Fixed in 1.6.1 Patch available GHSA-g6v3-7xmc-w563

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:gopacket:gopacket:*:*:*:*:*:go:*:*before 1.6.1Vulnerablegopacket
  • cpe:2.3:a:gopacket:gopacket:*:*:*:*:*:go:*:* Versions before 1.6.1 Vulnerable ·gopacket

Remediation

  • Fix · CNA gopacket (gopacket) Fixed in 1.6.1
  • Fix · GHSA-g6v3-7xmc-w563 github.com/gopacket/gopacket (Go) Fixed in 1.6.1 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-54332
  2. 2026-10-03 Alias added: GHSA-g6v3-7xmc-w563
  3. 2026-11-06 Affected versions changed · Red Hat
  4. 2026-11-06 CVSS score added · Red Hat

References

Exploit 1

Patch 1

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences