GHSA-m6hq-p25p-ffr2

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GHSA-m6hq-p25p-ffr2

Summary: containerd CRI server: Host memory exhaustion through Attach goroutine leak

Details: ### Impact 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`](https://kubernetes.io/docs/reference/kubectl/generated/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](https://kubernetes.io/docs/reference/access-authn-authz/validating-admission-policy/). ### Credits The containerd project would like to thank @Wheat2018 for responsibly disclosing this issue in accordance with the [containerd security policy](https://github.com/containerd/project/blob/main/SECURITY.md). ### 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](https://github.com/containerd/containerd/issues/new/choose) * Email us at [[email protected]](mailto:[email protected]) To report a security issue in containerd: * [Report a new vulnerability](https://github.com/containerd/containerd/security/advisories/new)

References: https://github.com/containerd/containerd/security/advisories/GHSA-m6hq-p25p-ffr2, https://nvd.nist.gov/vuln/detail/CVE-2025-64329, https://github.com/containerd/containerd/commit/083b53cd6f19b5de7717b0ce92c11bdf95e612df, https://github.com/containerd/containerd