{"id":"DEBIAN-CVE-2025-31133","details":"runc is a CLI tool for spawning and running containers according to the OCI specification. In versions 1.2.7 and below, 1.3.0-rc.1 through 1.3.1, 1.4.0-rc.1 and 1.4.0-rc.2 files, runc would not perform sufficient verification that the source of the bind-mount (i.e., the container's /dev/null) was actually a real /dev/null inode when using the container's /dev/null to mask. This exposes two methods of attack:  an arbitrary mount gadget, leading to host information disclosure, host denial of service, container escape, or a bypassing of maskedPaths. This issue is fixed in versions 1.2.8, 1.3.3 and 1.4.0-rc.3.","modified":"2026-09-01T16:06:12.144759584Z","published":"2025-11-06T19:15:41.343Z","upstream":["CVE-2025-31133"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-31133"}],"affected":[{"package":{"name":"runc","ecosystem":"Debian:12","purl":"pkg:deb/debian/runc?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.10+ds1-1","1.1.12+ds1-1","1.1.12+ds1-2","1.1.12+ds1-3","1.1.12+ds1-4","1.1.12+ds1-5","1.1.12+ds1-5.1","1.1.15+ds1-1","1.1.15+ds1-2","1.1.5+ds1-1","1.1.5+ds1-1+deb12u1","1.1.5+ds1-2","1.1.5+ds1-3","1.1.5+ds1-4","1.1.5+ds1-5","1.3.0+ds1-1","1.3.0+ds1-2","1.3.0+ds1-3","1.3.0+ds1-4","1.3.2+ds1-1","1.3.3+ds1-1","1.3.3+ds1-2","1.3.3+ds1-3","1.3.5+ds1-1","1.3.6+ds1-1","1.4.3+ds1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-31133.json"}},{"package":{"name":"runc","ecosystem":"Debian:13","purl":"pkg:deb/debian/runc?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.15+ds1-2","1.3.0+ds1-1","1.3.0+ds1-2","1.3.0+ds1-3","1.3.0+ds1-4","1.3.2+ds1-1","1.3.3+ds1-1","1.3.3+ds1-2","1.3.3+ds1-3","1.3.5+ds1-1","1.3.6+ds1-1","1.4.3+ds1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-31133.json"}},{"package":{"name":"runc","ecosystem":"Debian:14","purl":"pkg:deb/debian/runc?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.3+ds1-2"}]}],"versions":["1.1.15+ds1-2","1.3.0+ds1-1","1.3.0+ds1-2","1.3.0+ds1-3","1.3.0+ds1-4","1.3.2+ds1-1","1.3.3+ds1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-31133.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"}]}