[Podman] New Podman CVE: CVE-2021-20291

Hi, In the last few days, a new CVE affecting Podman, CVE-2021-20291, was made public. This vulnerability affects the containers/storage library and can cause a denial of service if the user pulls a specially-crafted image, causing most Podman commands to hang. The Podman team does not feel that this is a serious vulnerability, as any affected Podman image pull can be killed without adverse effect on other Podman processes and running containers. However, we still encourage all users to upgrade to the latest Podman release, Podman v3.1.0, which resolves the issue. Thanks, Matt Heon