{"schema":"threatline.record/2","record":{"id":"CVE-2023-0386","aliases":[],"summary":"Linux Kernel Improper Ownership Management Vulnerability","details":"Linux Kernel contains an improper ownership management vulnerability, where unauthorized access to the execution of the setuid file with capabilities was found in the Linux kernel’s OverlayFS subsystem in how a user copies a capable file from a nosuid mount into another mount. This uid mapping bug allows a local user to escalate their privileges on the system.","categories":["Operating systems"],"product":"Kernel","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2023-0386","source_modified_at":"2025-10-21T23:15:22.744Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Kernel","vendor":"n/a","versions":[{"version":"Linux kernel 6.2-rc6","status":"affected"}],"defaultStatus":null}],"fixed_versions":[],"cvss":7.8,"severity":"High","kev":{"listed":true,"date_added":"2025-06-17","due_date":"2025-07-08","required_action":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","ransomware_campaign_use":"Unknown"},"epss":{"probability":0.0788,"percentile":0.94704,"score_date":"2026-10-23"},"published_at":"2023-03-22T00:00:00.000Z","modified_at":"2025-10-21T23:15:22.744Z","provenance":[{"source":"CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:00:09.9001Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2023-0386","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2025-10-21T23:15:22.744Z"},{"source":"Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/local/cve_2023_0386_overlayfs_priv_esc.rb","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2023-03-22"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2023-0386","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","Metasploit","EPSS"],"references":[{"url":"https://access.redhat.com/security/cve/cve-2023-0386","source":"CISA KEV"},{"source":"CVE List","url":"https://security.netapp.com/advisory/ntap-20230420-0004/","tags":["x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-0386","source":"CISA KEV"},{"source":"CVE List","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f11ada10d0a","tags":["x_transferred"]},{"source":"CVE List","url":"https://www.debian.org/security/2023/dsa-5402","tags":["vendor-advisory","x_transferred"]},{"source":"CVE List","url":"https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html","tags":["mailing-list","x_transferred"]},{"source":"CVE List","url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html","tags":["mailing-list","x_transferred"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-0386","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CISA ADP","ssvc":{"exploitation":"active","automatable":"no","technical_impact":"total","assessed_at":"2025-07-17T03:55:31.499341Z"},"exploits":[{"source":"Metasploit","kind":"Exploit module","name":"Local Privilege Escalation via CVE-2023-0386","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/local/cve_2023_0386_overlayfs_priv_esc.rb","date":"2023-03-22","added":"2026-05-25","check":true}],"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"vendor and product","confidence":"heuristic","reviewed":false},"change_timestamp":"2025-10-21T23:15:22.744Z","content_hash":"74ff018512215dfe401e512a9c2005557e5d282923b302f51da725f991e4fcdf"}}