---
cve: "CVE-2025-31133"
severity: "HIGH"
cvss: 7.3
epss: "84%"
vendor: "opencontainers"
kev: false
exploited: false
published: "2025-11-06 19:15:41"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-12T00:46:21+02:00"
---

# CVE-2025-31133

> 7.3 HIGH · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |

## Patch verfügbar (OSV)

- eeb7e6024f9ee43876301b1d23c353384fa6dcdd (Commit)
- d842d7719497cc3b774fd71620278ac9e17710e0 (Commit)

## Referenzen

- <https://github.com/opencontainers/runc/security/advisories/GHSA-9493-h29p-rfm2>
- <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>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-31133) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_