CVE-2023-0386
CVSS v3
7.8
HIGH
EPSS Score
61.6 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
Description
A flaw was found in the Linux kernel, 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.
CISA Known Exploited Vulnerability
- Date Added
- 2025-06-17
- Patch Due Date
- 2025-07-08
- Ransomware Use
- Unknown
Technical details
- Published
- 2023-03-22
Frequently asked questions
What is CVE-2023-0386?
A flaw was found in the Linux kernel, 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.
Is CVE-2023-0386 actively exploited?
Yes. CVE-2023-0386 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2025-07-08.
What is the CVSS score for CVE-2023-0386?
CVE-2023-0386 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2023-0386 affecting your environment?
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