# CVE-2023-0386

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.

- Page: https://www.vulneraibility.com/cve/CVE-2023-0386
- CVSS: 7.8
- Known exploited: yes, in CISA KEV since 2025-06-17; CISA due date 2025-07-08
- EPSS: 7.88%
- Public exploit code: 1 Metasploit module · 18 GitHub proofs of concept (first 2023-04-20)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2025-07-17)
- Weakness: CWE-282
- Published: 2023-03-22

## Affected versions

- Kernel: affected Linux kernel 6.2-rc6

A version outside these ranges is not a statement that it is unaffected.

## References

- [other] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f11ada10d0a
- [other] https://security.netapp.com/advisory/ntap-20230420-0004/
- [advisory] https://www.debian.org/security/2023/dsa-5402
- [other] https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html
- [other] http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html
- [other] https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-0386

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.