Know every vulnerabilitybefore it knows you.
DevGuard continuously monitors your dependencies and alerts you when CVEs like this one affect your stack — with real-time threat intelligence built for developers.
GHSA-m6hq-p25p-ffr2
MediumCVSS 6.9 / 10
github.com/containerd/containerd/v2github.com/containerd/containerd/v2github.com/containerd/containerd/v2Impact
A bug was found in containerd's CRI Attach implementation where a user can exhaust memory on the host due to goroutine leaks.
Repetitive calls of CRI Attach (e.g., kubectl attach) could increase the memory usage of containerd.
Patches
This bug has been fixed in the following containerd versions:
- 2.2.0
- 2.1.5
- 2.0.7
- 1.7.29
Users should update to these versions to resolve the issue.
Workarounds
Set up an admission controller to control accesses to pods/attach resources.
e.g., Validating Admission Policy.
Credits
The containerd project would like to thank @Wheat2018 for responsibly disclosing this issue in accordance with the containerd security policy.
References
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-64329
For more information
If you have any questions or comments about this advisory:
- Open an issue in containerd
- Email us at security@containerd.io
To report a security issue in containerd:
The vulnerability requires local access to the device to be exploited. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
Continuously monitor your dependencies and get alerted when vulnerabilities like this one affect your stack.
Checkout DevGuard