runc is a CLI tool for spawning and running containers according to the OCI specification. It was found that AppArmor can be bypassed when /proc inside the container is symlinked with a specific mount configuration. This issue has been fixed in runc version 1.1.5, by prohibiting symlinked /proc. See PR #3785 for details. users are advised to upgrade. Users unable to upgrade should avoid using an untrusted container image.
Exploitability
AV:LAC:LPR:NUI:RScope
S:CImpact
C:LI:LA:L6.1/CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:LOther