containerd allows host filesystem access on pull

Impact

A time-of-check to time-of-use (TOCTOU) vulnerability was found in containerd v2.1.0. While unpacking an image during an image pull, specially crafted container images could arbitrarily modify the host file system.

Patches

This bug has been fixed in the following containerd versions:

• 2.1.1

The only affected version of containerd is 2.1.0. Other versions of containerd are not affected.

Users should update to this version to resolve the issue.

Workarounds

Ensure that only trusted images are used and that only trusted users have permissions to import images.

Credits

The containerd project would like to thank Tõnis Tiigi for responsibly disclosing this issue in accordance with the containerd security policy.

References

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-47290

For more information

If you have any questions or comments about this advisory:

• Open an issue in containerd
• Email us at [email protected]

To report a security issue in containerd:

• Report a new vulnerability
• Email us at [email protected]