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CVE-2023-0386: Linux Kernel Improper Ownership Management Vulnerability
Linux Kernel · in CISA KEV since 2025-06-17
2025-06-17added to KEV
2025-07-08federal remediation due date
7.88%EPSS exploit probability (30 days) 94.5th percentile
7.8 HIGHCVSS 3.1
Unknownknown ransomware use
818days from NVD publication to KEV
What it is
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.
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
| CWE | CWE-282 |
|---|---|
| CVSS vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD published | 2023-03-22 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2023-0386.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.