{"schema":"threatline.record/2","record":{"id":"CVE-2026-96812","aliases":[],"summary":"Host Root Sandbox Escape in gVisor via Character Device Passthrough and CUSE","details":"Improper Exposure of Resource to Wrong Sphere in the host file helper (gofer) in Google gVisor prior to commit 573a9e73cf844f on Linux platforms with CUSE enabled allows a local attacker with container image deployment privileges to achieve root code execution on the host system. By including a /dev/cuse character device node in a container image, opening the device passes through to the host, allowing the sandboxed attacker to register a host device and exploit CUSE unrestricted ioctl handling to overwrite root udev helper memory.","categories":["Unclassified"],"product":"gVisor","vendor":"Google","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-96812","source_modified_at":"2026-09-25T16:07:52.560Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"gVisor","vendor":"Google","versions":[{"status":"affected","version":"0","lessThan":"573a9e73cf844f","versionType":"git"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-96812","source_modified_at":"2026-09-25T16:07:52.560Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"gVisor","ecosystem":null},"version":"573a9e73cf844f","basis":"first unaffected version stated in the CVE record"}],"cvss":8.8,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00095,"percentile":0.00609,"score_date":"2026-10-23"},"published_at":"2026-09-25T14:47:47.410Z","modified_at":"2026-09-25T16:07:52.560Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-96812","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-09-25T16:07:52.560Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-96812","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/google/gvisor/commit/573a9e73cf844f"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"total","assessed_at":"2026-09-25T16:07:43.360610Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-09-25T16:07:52.560Z","content_hash":"334f40673e9845c376db5b09fc92b3cfab97fc03f55502d4a8ffb5c53d239e83"}}