---
cve: "CVE-2019-25044"
severity: "HIGH"
cvss: 7.8
epss: "28.9%"
vendor: "Linux"
kev: false
exploited: false
published: "2021-05-14 23:15:07"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-10T10:03:54+02:00"
---

# CVE-2019-25044

> 7.8 HIGH

## Beschreibung

The block subsystem in the Linux kernel before 5.2 has a use-after-free that can lead to arbitrary code execution in the kernel context and privilege escalation, aka CID-c3e2219216c9. This is related to blk_mq_free_rqs and blk_cleanup_queue.

## CVSS-Vektor

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

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

## Referenzen

- <https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2>
- <https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c3e2219216c92919a6bd1711f340f5faa98695e6>
- <https://security.netapp.com/advisory/ntap-20210629-0006/>
- <https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-blk_mq_free_rqs>
- <https://syzkaller.appspot.com/bug?id=36fe241584203cf394d44560a42e3430434f1213>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2019-25044) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_