CVE-2020-16119

Name: CVE-2020-16119
Creator: NVD / NIST
Published: 2021-01-14T01:15:13.01+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.42%

Last modified Jun 17, 2026

CVE-2020-16119 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. EPSS estimates a 0.42% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.42%

33.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	All versions
Canonical	Ubuntu Linux	12.04
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	20.04
Debian	Debian Linux	9.0
Debian	Debian Linux	11.0

References

https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal/commit/?id=01872cb896c76cedeabe93a08456976ab55ad695Patch, Third Party Advisory
https://launchpad.net/bugs/1883840Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00010.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.htmlThird Party Advisory
https://lore.kernel.org/netdev/20201013171849.236025-1-kleber.souza%40canonical.com/T/
https://security.netapp.com/advisory/ntap-20210304-0006/Third Party Advisory
https://ubuntu.com/USN-4576-1Third Party Advisory
https://ubuntu.com/USN-4577-1Third Party Advisory
https://ubuntu.com/USN-4578-1Third Party Advisory
https://ubuntu.com/USN-4579-1Third Party Advisory
https://ubuntu.com/USN-4580-1Third Party Advisory
https://www.debian.org/security/2021/dsa-4978Third Party Advisory
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal/commit/?id=01872cb896c76cedeabe93a08456976ab55ad695Patch, Third Party Advisory
https://launchpad.net/bugs/1883840Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00010.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.htmlThird Party Advisory
https://lore.kernel.org/netdev/20201013171849.236025-1-kleber.souza%40canonical.com/T/
https://security.netapp.com/advisory/ntap-20210304-0006/Third Party Advisory
https://ubuntu.com/USN-4576-1Third Party Advisory
https://ubuntu.com/USN-4577-1Third Party Advisory
https://ubuntu.com/USN-4578-1Third Party Advisory
https://ubuntu.com/USN-4579-1Third Party Advisory
https://ubuntu.com/USN-4580-1Third Party Advisory
https://www.debian.org/security/2021/dsa-4978Third Party Advisory

Timeline

Published: Jan 14, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-16119?

How severe is CVE-2020-16119?

CVE-2020-16119 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.42% probability of exploitation in the next 30 days.

How do I fix CVE-2020-16119?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-16119?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST