The runC tool is a lightweight, portable implementation of the Open Container Format that provides container runtime. Security Fix: * A flaw was found in the way runc handled system file descriptors when running containers. A malicious container could use this flaw to overwrite contents of the runc binary and consequently run arbitrary commands on the container host system. Additional details about this flaw, including mitigation information, can be found in the vulnerability article linked from the Reference section. For more details about the security issue, including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section.