---
cve: "CVE-2018-16884"
severity: "MEDIUM"
cvss: 6.5
epss: "1.5%"
vendor: "[UNKNOWN]"
kev: false
exploited: false
published: "2018-12-18 22:29:04"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-17T11:16:35+02:00"
---

# CVE-2018-16884

> 6.5 MEDIUM

## Beschreibung

A flaw was found in the Linux kernel's NFS41+ subsystem. NFS41+ shares mounted in different network namespaces at the same time can make bc_svc_process() use wrong back-channel IDs and cause a use-after-free vulnerability. Thus a malicious container user can cause a host kernel memory corruption and a system panic. Due to the nature of the flaw, privilege escalation cannot be fully ruled out.

## CVSS-Vektor

```
CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Benachbart | warn |
| AC Komplexität | Hoch | good |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Keine | good |
| I Integrität | Gering | warn |
| A Verfügbarkeit | Hoch | bad |

## Referenzen

- <http://www.securityfocus.com/bid/106253>
- <https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html>
- <https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html>
- <https://usn.ubuntu.com/3932-1/>
- <https://usn.ubuntu.com/3932-2/>
- <https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html>
- <https://usn.ubuntu.com/3981-1/>
- <https://usn.ubuntu.com/3980-1/>
- <https://usn.ubuntu.com/3980-2/>
- <https://usn.ubuntu.com/3981-2/>
- <https://access.redhat.com/errata/RHSA-2019:1873>
- <https://access.redhat.com/errata/RHSA-2019:1891>
- <https://access.redhat.com/errata/RHSA-2019:2696>
- <https://access.redhat.com/errata/RHSA-2019:2730>
- <https://access.redhat.com/errata/RHSA-2019:3309>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2018-16884) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_