Linux · Kernel
CVE-2023-0386
Linux Kernel Improper Ownership Management Vulnerability
Was es ist
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: 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.
Was zu tun ist
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Frist für US-Bundesbehörden: 8. Juli 2025
- Zur CISA-Liste hinzugefügt
- 17. Juni 2025
- Veröffentlicht
- 22. März 2023
- Schweregrad
- Hoch 7,8 CVSS 3.1
- Wahrscheinlichkeit von Angriffen in den nächsten 30 Tagen (EPSS)
- 7,9% unter den obersten 5,3% aller bekannten Schwachstellen
- Schwachstellentyp
- CWE-282
- Mehr Details
- NVD · CVE.org · CISA
Alle Quellen (6)
- https://www.debian.org/security/2023/dsa-5402
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f11ada10d0a
- https://security.netapp.com/advisory/ntap-20230420-0004/
- https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html
- http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
Weitere ausgenutzte Schwachstellen von Linux
| Hinzugefügt | Schwachstelle | Produkt | Schweregrad | Angriffswahrscheinlichkeit |
|---|---|---|---|---|
| 18.09.2026 | Improper Check for Unusual or Exceptional Conditions | Kernel | Kritisch 9,8 | 3,3% |
| 18.09.2026 | Race Condition | Kernel | Hoch 7,8 | 1,6% |
| 18.09.2026 | Out-of-Bounds Write | Kernel | Hoch 8,8 | 0,9% |
| 27.08.2026 | Unspecified | Kernel | Hoch 7,8 | 0,7% |
| 26.08.2026 | Out-of-Bounds Write | Kernel | Hoch 7,8 | 8,9% |
| 02.06.2026 | Improper Authentication | Kernel | Hoch 7,8 | 5,5% |
| 01.05.2026 | Incorrect Resource Transfer Between Spheres | Kernel | Hoch 7,8 | 98% |
| 26.01.2026 | Integer Overflow | Kernel | Hoch 7,8 | 15% |
Quellen: Known Exploited Vulnerabilities (CISA, gemeinfrei), CVE records (cve.org) und EPSS (FIRST). Die Angriffswahrscheinlichkeit ist die EPSS-Schätzung, dass jemand in den nächsten 30 Tagen versucht, die Schwachstelle auszunutzen.