What is CVE-2023-0386?

CVE-2023-0386 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10. CVE-2023-0386 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild.

What is the CVSS score for CVE-2023-0386?

CVE-2023-0386 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2023-0386?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2023-0386 patch availability.

Is CVE-2023-0386 actively exploited?

Yes. CVE-2023-0386 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild with a CVSS score of 7.8 (High severity).

CVE-2023-0386

High KEV — Actively Exploited

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.

Package Linux Kernel

Published 2023-03-22

Last modified 2025-11-04

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-282

CVE-2023-0386 is classified as CWE-282

See CWE-282 on MITRE CWE for full details on this weakness type.

References

7 total

Kernel Git
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f11ada10d0a

Broken Link Mailing List Patch Vendor Advisory
CISA
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-0386

US Government Resource
Packet Storm
http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html

Third Party Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html

Mailing List Third Party Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html

Mailing List Third Party Advisory

Showing 5 of 7 references View all on NVD

Details

CVE ID CVE-2023-0386

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2023-03-22

Modified 2025-11-04

KEV Yes

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2023-0386?

CVE-2023-0386 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . CVE-2023-0386 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild.
What is the CVSS score for CVE-2023-0386?

CVE-2023-0386 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2023-0386?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2023-0386 patch availability.
Is CVE-2023-0386 actively exploited?

Yes. CVE-2023-0386 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. It carries a CVSS score of 7.8 (High severity).