{"id":"AZL-69818","summary":"CVE-2025-31133 affecting package moby-runc for versions less than 1.2.8-1","details":"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.","modified":"2026-04-01T05:21:37.792043Z","published":"2025-11-06T19:15:41Z","upstream":["CVE-2025-31133"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-31133"}],"affected":[{"package":{"name":"moby-runc","ecosystem":"Azure Linux:2","purl":"pkg:rpm/azure-linux/moby-runc"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.8-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-69818.json"}}],"schema_version":"1.7.5"}