CVE-2023-0386
Linux Kernel Improper Ownership Management Vulnerability
CVSS
—
No CVSS
EPSS
7.9%
p95
KEV
YES
Jun 17, 2025
Exploit Today
78
0-100
Published: — · Last modified: —
Product
Linux / Kernel
Vulnerability
Linux Kernel Improper Ownership Management Vulnerability
Added to KEV
Jun 17, 2025
Remediate by
Jul 8, 2025
Known ransomware use
No
Summary description
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
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
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