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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| pion | dtls | < 2.1.4 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | snowflake | 2.2.0-1 | — |
| Debian 13 | snowflake | 2.2.0-1 | — |
| Debian 12 | snowflake | 2.2.0-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | snowflake | 1.1.0-2ubuntu0.1+esm2 | USN-7966-1 |
| Ubuntu Pro 22.04 LTS | telegraf | 1.21.4+ds1-0ubuntu2+esm2 | USN-7966-2 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/pion/dtls | < 2.1.4 | 2.1.4 | GHSA-cm8f-h6j3-p25c |
| Go | github.com/pion/dtls/v2 | < 2.1.4 | 2.1.4 | GHSA-cm8f-h6j3-p25c |
Advisories 2
- USN-7966-2 telegraf vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- USN-7966-1 snowflake vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026