CVE-2025-64329

containerd CRI server: Host memory exhaustion through Attach goroutine leak

State: Published
Severity: 6.9 Medium
Published: Nov 7, 2025
Updated: Nov 7, 2025
Reserved: Oct 30, 2025

Description

containerd is an open-source container runtime. Versions 1.7.28 and below, 2.0.0-beta.0 through 2.0.6, 2.1.0-beta.0 through 2.1.4, and 2.2.0-beta.0 through 2.2.0-rc.1 contain a bug in the CRI Attach implementation where a user can exhaust memory on the host due to goroutine leaks. This issue is fixed in versions 1.7.29, 2.0.7, 2.1.5 and 2.2.0. To workaround this vulnerability, users can set up an admission controller to control accesses to pods/attach resources.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-401 Missing Release of Memory after Effective Lifetime

Affected Products

Product	Versions
containerdcontainerd	< 1.7.29Affected < 2.0.7Affected >= 2.1.0-beta.0, < 2.1.5Affected >= 2.2.0-beta.0, < 2.2.0Affected

References

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