---
cve: "CVE-2019-19036"
severity: "MEDIUM"
cvss: 5.5
epss: "4%"
vendor: "Linux"
kev: false
exploited: false
published: "2019-11-21 02:15:23"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-09T02:30:02+02:00"
---

# CVE-2019-19036

> 5.5 MEDIUM

## Beschreibung

btrfs_root_node in fs/btrfs/ctree.c in the Linux kernel through 5.3.12 allows a NULL pointer dereference because rcu_dereference(root->node) can be zero.

## CVSS-Vektor

```
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
```

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

## Referenzen

- <http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html>
- <https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19036>
- <https://security.netapp.com/advisory/ntap-20191205-0001/>
- <https://usn.ubuntu.com/4414-1/>
- <https://usn.ubuntu.com/4439-1/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2019-19036) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_