CVEvulnerability
CVE-2023-0386
CISA Known Exploited Vulnerability
Linux Kernel Improper Ownership Management Vulnerability — Linux Kernel
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.
- Added to KEV
- 2025-06-17
- Remediation due
- 2025-07-08
- Ransomware use
- Unknown
- 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
- Status
- Analyzed
- Published
- 2023-03-22
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-282
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.
Affected configurations
• debian debian linux 10.0
• netapp h300s firmware
• netapp h500s firmware
• netapp h700s firmware
• netapp h410s firmware
• netapp h410c firmware
• canonical ubuntu linux 18.04
• canonical ubuntu linux 20.04
• canonical ubuntu linux 22.04
• linux linux kernel (>= 5.11 < 5.15.91)
• linux linux kernel (>= 5.16 < 6.1.9)
• linux linux kernel 6.2
Related
Weakness · CWE (1)
- CWE-282 Improper Ownership Management weakness
References
- http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f11ada10d0a Broken Link, Mailing List, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html Mailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20230420-0004/ Third Party Advisory
- https://www.debian.org/security/2023/dsa-5402 Third Party Advisory
- http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f11ada10d0a Broken Link, Mailing List, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html Mailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20230420-0004/ Third Party Advisory
- https://www.debian.org/security/2023/dsa-5402 Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-0386 US Government Resource