CVE-2022-2529: Multiple DoS Attack Vectors in sflow packet handling

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-09-30 · updated 2026-06-17
Weakness: CWE-20

Description

sflow decode package does not employ sufficient packet sanitisation which can lead to a denial of service attack. Attackers can craft malformed packets causing the process to consume large amounts of memory resulting in a denial of service.

Affected products

Cloudflare goflow: before 3.4.4 — fixed in 3.4.4

How to fix

Upgrade to a fixed version: Cloudflare goflow 3.4.4. Check the vendor advisory for mitigations.

References

https://github.com/cloudflare/goflow/security/advisories/GHSA-9rpw-2h95-666c
https://github.com/cloudflare/goflow/security/advisories/GHSA-9rpw-2h95-666c

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