cifs-utils is vulnerable to privilege escalation. The vulnerability exists due to a flaw that allows an attacker to use the Kerberos credentials of the host when mounting a krb5 CIFS file system from within a container.
bugzilla.redhat.com/show_bug.cgi?id=1921116
bugzilla.samba.org/show_bug.cgi?id=14651
lists.fedoraproject.org/archives/list/[email protected]/message/2W4HSDIWXXNQBUW5ZS37RQMLJ7THK5AS/
lists.fedoraproject.org/archives/list/[email protected]/message/66WJ3SVBHCSNQZAWSGLB6FBOCFU45FFG/
lists.fedoraproject.org/archives/list/[email protected]/message/Z4BZSJXROEFHYATAAHHRR6P3HUSMPQB3/
security-tracker.debian.org/tracker/CVE-2021-20208