Vulnerability Details CVE-2025-31133
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 1.6%
CVSS Severity
CVSS v3 Score 7.8
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
Products affected by CVE-2025-31133
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cpe:2.3:a:linuxfoundation:runc:-
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cpe:2.3:a:linuxfoundation:runc:0.0.1
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cpe:2.3:a:linuxfoundation:runc:0.0.2
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cpe:2.3:a:linuxfoundation:runc:0.0.2.1
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cpe:2.3:a:linuxfoundation:runc:0.0.3
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cpe:2.3:a:linuxfoundation:runc:0.0.4
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cpe:2.3:a:linuxfoundation:runc:0.0.5
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cpe:2.3:a:linuxfoundation:runc:0.0.6
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cpe:2.3:a:linuxfoundation:runc:0.0.7
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cpe:2.3:a:linuxfoundation:runc:0.0.8
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cpe:2.3:a:linuxfoundation:runc:0.0.9
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cpe:2.3:a:linuxfoundation:runc:0.1.0
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cpe:2.3:a:linuxfoundation:runc:0.1.1
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cpe:2.3:a:linuxfoundation:runc:1.0.0
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cpe:2.3:a:linuxfoundation:runc:1.0.1
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cpe:2.3:a:linuxfoundation:runc:1.0.2
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cpe:2.3:a:linuxfoundation:runc:1.0.3
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cpe:2.3:a:linuxfoundation:runc:1.1.0
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cpe:2.3:a:linuxfoundation:runc:1.1.1
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cpe:2.3:a:linuxfoundation:runc:1.1.10
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cpe:2.3:a:linuxfoundation:runc:1.1.11
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cpe:2.3:a:linuxfoundation:runc:1.1.12
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cpe:2.3:a:linuxfoundation:runc:1.1.13
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cpe:2.3:a:linuxfoundation:runc:1.1.14
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cpe:2.3:a:linuxfoundation:runc:1.1.15
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cpe:2.3:a:linuxfoundation:runc:1.1.2
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cpe:2.3:a:linuxfoundation:runc:1.1.3
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cpe:2.3:a:linuxfoundation:runc:1.1.4
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cpe:2.3:a:linuxfoundation:runc:1.1.5
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cpe:2.3:a:linuxfoundation:runc:1.1.6
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cpe:2.3:a:linuxfoundation:runc:1.1.7
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cpe:2.3:a:linuxfoundation:runc:1.1.8
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cpe:2.3:a:linuxfoundation:runc:1.1.9
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cpe:2.3:a:linuxfoundation:runc:1.2.0
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cpe:2.3:a:linuxfoundation:runc:1.2.1
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cpe:2.3:a:linuxfoundation:runc:1.2.2
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cpe:2.3:a:linuxfoundation:runc:1.2.3
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cpe:2.3:a:linuxfoundation:runc:1.2.4
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cpe:2.3:a:linuxfoundation:runc:1.2.5
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cpe:2.3:a:linuxfoundation:runc:1.2.6
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cpe:2.3:a:linuxfoundation:runc:1.2.7
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cpe:2.3:a:linuxfoundation:runc:1.3.0
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cpe:2.3:a:linuxfoundation:runc:1.3.1
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cpe:2.3:a:linuxfoundation:runc:1.3.2
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cpe:2.3:a:linuxfoundation:runc:1.4.0