Multiple vulnerabilities were discovered in runc, the Open Container Project runtime, which is often used with virtualization environments such as Docker. Malicious Docker images or OCI bundles could breach isolation.
runc exec --capcreated processes with non-empty inheritable Linux process capabilities, creating an atypical Linux environment and enabling programs with inheritable file capabilities to elevate those capabilities to the permitted set during execve(2). This bug did not affect the container security sandbox as the inheritable set never contained more capabilities than were included in the container's bounding set.
For Debian 10 buster, this problem has been fixed in version 1.0.0~rc6+dfsg1-3+deb10u2.
We recommend that you upgrade your runc packages.
For the detailed security status of runc please refer to its security tracker page at: https://security-tracker.debian.org/tracker/runc
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS