A vulnerability in Clair allows overwriting an arbitrary file anywhere in the filesystem, when scanning a malicious Docker layer. In most if not all instances this could lead to remote code execution on the Clair scanner instance.
This issue has been addressed in the following products:
Red Hat Quay 3
Via RHSA-2021:3665 https://access.redhat.com/errata/RHSA-2021:3665
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):