Linux · Kernel
CVE-2023-0386
Linux Kernel Improper Ownership Management Vulnerability
Cos'è
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.
Cosa fare
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Scadenza per le agenzie federali USA: 8 luglio 2025
- Aggiunta all'elenco CISA
- 17 giugno 2025
- Pubblicato
- 22 marzo 2023
- Gravità
- Alta 7,8 CVSS 3.1
- Probabilità di attacchi nei prossimi 30 giorni (EPSS)
- 7,9% tra il 5,3% più alto di tutte le vulnerabilità note
- Tipo di debolezza
- CWE-282
- Più dettagli
- NVD · CVE.org · CISA
Tutte le fonti (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
Altre falle sfruttate di Linux
| Aggiunto | Vulnerabilità | Prodotto | Gravità | Probabilità di attacco |
|---|---|---|---|---|
| 18 set 2026 | Improper Check for Unusual or Exceptional Conditions | Kernel | Critica 9,8 | 3,3% |
| 18 set 2026 | Race Condition | Kernel | Alta 7,8 | 1,6% |
| 18 set 2026 | Out-of-Bounds Write | Kernel | Alta 8,8 | 0,9% |
| 27 ago 2026 | Unspecified | Kernel | Alta 7,8 | 0,7% |
| 26 ago 2026 | Out-of-Bounds Write | Kernel | Alta 7,8 | 8,9% |
| 2 giu 2026 | Improper Authentication | Kernel | Alta 7,8 | 5,5% |
| 1 mag 2026 | Incorrect Resource Transfer Between Spheres | Kernel | Alta 7,8 | 98% |
| 26 gen 2026 | Integer Overflow | Kernel | Alta 7,8 | 15% |
Fonti: Known Exploited Vulnerabilities (CISA, pubblico dominio), CVE records (cve.org) e EPSS (FIRST). La probabilità di attacco è la stima EPSS che qualcuno provi a sfruttare la falla nei prossimi 30 giorni.