CVE-2025-52881

CVE-2025-52881 affects runc (versions 1.2.7, 1.3.2, 1.4.0-rc.2). The issue lets an attacker redirect writes to /proc to other procfs files via a racing container with shared mounts (verified in Dockerfile-based parallel builds). This can enable container escape with high impact. Fixed in 1.2.8, 1...