---
cve: "CVE-2020-16119"
severity: "MEDIUM"
cvss: 6.3
epss: "42%"
vendor: "Canonical"
kev: false
exploited: false
published: "2021-01-14 01:15:13"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-10T22:34:43+02:00"
---

# CVE-2020-16119

> 6.3 MEDIUM

## Beschreibung

Use-after-free vulnerability in the Linux kernel exploitable by a local attacker due to reuse of a DCCP socket with an attached dccps_hc_tx_ccid object as a listener after being released. Fixed in Ubuntu Linux kernel 5.4.0-51.56, 5.3.0-68.63, 4.15.0-121.123, 4.4.0-193.224, 3.13.0.182.191 and 3.2.0-149.196.

## CVSS-Vektor

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

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

## Referenzen

- <https://launchpad.net/bugs/1883840>
- <https://ubuntu.com/USN-4576-1>
- <https://ubuntu.com/USN-4577-1>
- <https://ubuntu.com/USN-4578-1>
- <https://ubuntu.com/USN-4579-1>
- <https://ubuntu.com/USN-4580-1>
- <https://lore.kernel.org/netdev/20201013171849.236025-1-kleber.souza%40canonical.com/T/>
- <https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal/commit/?id=01872cb896c76cedeabe93a08456976ab55ad695>
- <https://security.netapp.com/advisory/ntap-20210304-0006/>
- <https://www.debian.org/security/2021/dsa-4978>
- <https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html>
- <https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2020-16119) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_