CVE-2025-31133
Severity CVSS v4.0:
HIGH
Type:
Unavailable / Other
Publication date:
06/11/2025
Last modified:
03/12/2025
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.
Impact
Base Score 4.0
7.30
Severity 4.0
HIGH
Base Score 3.x
7.80
Severity 3.x
HIGH
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:a:linuxfoundation:runc:*:*:*:*:*:*:*:* | 1.2.8 (excluding) | |
| cpe:2.3:a:linuxfoundation:runc:*:*:*:*:*:*:*:* | 1.3.0 (including) | 1.3.3 (excluding) |
| cpe:2.3:a:linuxfoundation:runc:1.4.0:rc1:*:*:*:*:*:* | ||
| cpe:2.3:a:linuxfoundation:runc:1.4.0:rc2:*:*:*:*:*:* |
To consult the complete list of CPE names with products and versions, see this page
References to Advisories, Solutions, and Tools
- 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