CVE-2023-0386
Last modified
CVE-2023-0386 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 7.88% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Debian | Debian Linux | 10.0 | — |
| Netapp | H300s Firmware | All versions | — |
| Netapp | H500s Firmware | All versions | — |
| Netapp | H700s Firmware | All versions | — |
| Netapp | H410s Firmware | All versions | — |
| Netapp | H410c Firmware | All versions | — |
| 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 | Rc1 |
References
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f11ada10d0aBroken Link, Mailing List, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/06/msg00008.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20230420-0004/Third Party Advisory
- https://www.debian.org/security/2023/dsa-5402Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f11ada10d0aBroken Link, Mailing List, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/06/msg00008.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20230420-0004/Third Party Advisory
- https://www.debian.org/security/2023/dsa-5402Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-0386US Government Resource
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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