Overview
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.
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
Key Details
| Property | Value |
|---|
| CVE ID |
CVE-2023-0386 |
| Vendor / Product |
Linux — Kernel |
| NVD Published | 2023-03-22 |
| NVD Last Modified | 2025-11-04 |
| CVSS 3.1 Score | 7.8 |
| CVSS 3.1 Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Severity | HIGH |
| CWE |
CWE-282
|
| CISA KEV Added | 2025-06-17 |
| CISA KEV Deadline | 2025-07-08 |
| Known Ransomware Use |
No |
Required Action
CISA BOD 22-01 Deadline: 2025-07-08.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Timeline
| Date | Event |
|---|
| 2025-06-17 | Added to CISA Known Exploited Vulnerabilities catalog |
| 2025-07-08 | CISA BOD 22-01 remediation deadline |