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CVE-2023-0386

7.8
HIGHCVSS v3.1 Base Score
48.67%
MEDIUM RiskEPSS (98th percentile)
KEV

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.

Published: 3/22/2023
Modified: 11/4/2025
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ACTIVELY EXPLOITED IN THE WILD

This vulnerability is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Vulnerability Name:

Linux Kernel Improper Ownership Management Vulnerability

Vendor / Product:

Linux Kernel

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.

Due Date: 7/8/2025(OVERDUE)
Added to KEV:

6/17/2025

Notes:

This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. For more information, please see: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f11ada10d0a ; https://access.redhat.com/security/cve/cve-2023-0386 ; https://security.netapp.com/advisory/ntap-20230420-0004/ ; https://nvd.nist.gov/vuln/detail/CVE-2023-0386

Vulnerability Summary

CVSS v3 Score

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Score (Exploitation Probability)

48.67%MEDIUM Exploitation Risk
98th percentile

This vulnerability has a 48.67% probability of being exploited in the next 30 days, ranking higher than 98% of all scored CVEs.

CWE Classification

Related Vulnerabilities

Same Weakness Type(CWE-282)

Similar SeverityHIGH