{"id":"CVE-2025-31133","sourceIdentifier":"security-advisories@github.com","published":"2025-11-06T19:15:41.343","lastModified":"2026-10-07T21:10:00.200","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"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."},{"lang":"es","value":"runc es una herramienta CLI para generar y ejecutar contenedores según la especificación OCI. En las versiones 1.2.7 e inferiores, 1.3.0-rc.1 hasta 1.3.1, 1.4.0-rc.1 y 1.4.0-rc.2, runc no realizaba una verificación suficiente de que el origen del bind-mount (es decir, el [SystemPath] del contenedor) era realmente un inodo [SystemPath] real al usar el [SystemPath] del contenedor para enmascarar. Esto expone dos métodos de ataque: un gadget de montaje arbitrario, lo que lleva a la revelación de información del host, denegación de servicio del host, escape del contenedor o una elusión de maskedPaths. Este problema está solucionado en las versiones 1.2.8, 1.3.3 y 1.4.0-rc.3."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"opencontainers","product":"runc","versions":[{"version":"< 1.2.8","status":"affected"},{"version":">= 1.3.0-rc.1, < 1.3.3","status":"affected"},{"version":">= 1.4.0-rc.1, <= 1.4.0-rc.3","status":"affected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"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","baseScore":7.3,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"ACTIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","subAvailabilityImpact":"HIGH","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.1,"impactScore":6.0}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2025-11-06T19:03:45.356326Z","id":"CVE-2025-31133","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-61"},{"lang":"en","value":"CWE-363"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:linuxfoundation:runc:*:*:*:*:*:*:*:*","versionEndExcluding":"1.2.8","matchCriteriaId":"889E52A1-D7B0-4DC8-BD63-9413A1DD9EEB"},{"vulnerable":true,"criteria":"cpe:2.3:a:linuxfoundation:runc:*:*:*:*:*:*:*:*","versionStartIncluding":"1.3.0","versionEndExcluding":"1.3.3","matchCriteriaId":"F3193A96-E882-439B-984E-782315C62F69"},{"vulnerable":true,"criteria":"cpe:2.3:a:linuxfoundation:runc:1.4.0:rc1:*:*:*:*:*:*","matchCriteriaId":"082E3496-822B-481B-AC2F-DA8DCAFC28FF"},{"vulnerable":true,"criteria":"cpe:2.3:a:linuxfoundation:runc:1.4.0:rc2:*:*:*:*:*:*","matchCriteriaId":"71C62E90-6357-44A4-B582-28B1F1D9B16D"}]}]}],"references":[{"url":"https://github.com/opencontainers/runc/commit/1a30a8f3d921acbbb6a4bb7e99da2c05f8d48522","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/opencontainers/runc/commit/5d7b2424072449872d1cd0c937f2ca25f418eb66","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/opencontainers/runc/commit/8476df83b534a2522b878c0507b3491def48db9f","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/opencontainers/runc/commit/db19bbed5348847da433faa9d69e9f90192bfa64","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/opencontainers/runc/security/advisories/GHSA-9493-h29p-rfm2","source":"security-advisories@github.com","tags":["Mitigation","Patch","Third Party Advisory"]}]}