{"id":"CVE-2025-31133","revision":"5bda2d627f3149239366c5f0c4051381","records":[{"revision":"5bda2d627f3149239366c5f0c4051381","observedAt":"2026-10-25T02:24:48.187+00:00","statement":{"source":"nvd","id":"CVE-2025-31133","aliases":[],"title":"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 sourc…","description":"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.","state":0,"publishedAt":"2025-11-06T19:15:41.343+00:00","modifiedAt":"2026-10-07T21:10:00.2+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":7.3,"severity":"HIGH"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://github.com/opencontainers/runc/commit/1a30a8f3d921acbbb6a4bb7e99da2c05f8d48522","https://github.com/opencontainers/runc/commit/5d7b2424072449872d1cd0c937f2ca25f418eb66","https://github.com/opencontainers/runc/commit/8476df83b534a2522b878c0507b3491def48db9f","https://github.com/opencontainers/runc/commit/db19bbed5348847da433faa9d69e9f90192bfa64","https://github.com/opencontainers/runc/security/advisories/GHSA-9493-h29p-rfm2"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-31133","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-61","CWE-363"],"productCriteria":["cpe:2.3:a:linuxfoundation:runc:*:*:*:*:*:*:*:*","cpe:2.3:a:linuxfoundation:runc:1.4.0:rc1:*:*:*:*:*:*","cpe:2.3:a:linuxfoundation:runc:1.4.0:rc2:*:*:*:*:*:*"],"sourceDates":{"published":"2025-11-06T19:15:41.343","lastModified":"2026-10-07T21:10:00.200"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2025-31133","identifiers":["CVE-2025-31133"]},"retained":false,"historicalAffected":[]}],"coverage":[]}