Double Free Affecting nerdctl package, versions <2.2.2-r5


Severity

Recommended
0.0
high
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.02% (5th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Double Free vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-CHAINGUARDLATEST-NERDCTL-16622681
  • published10 May 2026
  • disclosed7 May 2026

Introduced: 7 May 2026

NewCVE-2026-33811  (opens in a new tab)
CWE-415  (opens in a new tab)

How to fix?

Upgrade Chainguard nerdctl to version 2.2.2-r5 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nerdctl package and not the nerdctl package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.

CVSS Base Scores

version 3.1