CVE-2025-64329: containerd CRI server: Host memory exhaustion through Attach goroutine leak

November 6, 2025 (updated November 7, 2025)

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.

References

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

Code Behaviors & Features

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