CVE-2023-0386
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- In the wild
- CISA lists this as exploited in real attacks. Treat as urgent.
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- ReservedThe CVE id was reserved by its CNA
- PublishedDisclosed publicly on CVE.org and NVD
- Fix referencedNVD first recorded a patch, advisory or mitigation link
- 2025-06-17 Exploited in the wildAdded to CISA's Known Exploited Vulnerabilities list
- 2025-07-08 Remediation deadlineCISA's due date for federal agencies to fix it
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: yes, CISA lists it. This puts it above everything that is not.
- Exploit odds: 7.9% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Added to CISA KEV
- 2025-06-17
- Exploit probability
- 7.9% · EPSS, next 30 days
- Weakness
- CWE-282
- Record status
- Analyzed
Affected
- 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
Attack profile CVSS 3.1 · 7.8
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2023-0386.md and follow it. Check whether this project is affected by CVE-2023-0386. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f11ada10d0a
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f11ada10d0a
References
- http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f11ada10d0a
- https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
- https://security.netapp.com/advisory/ntap-20230420-0004/
- https://www.debian.org/security/2023/dsa-5402
- http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f11ada10d0a
- https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
- https://security.netapp.com/advisory/ntap-20230420-0004/
- https://www.debian.org/security/2023/dsa-5402
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-0386