CVE-2020-16119

MEDIUM

Linux Kernel - Use-After-Free in DCCP Socket Handling

Title source: llm
STIX 2.1

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.

References (12)

Core 12
Core References
Issue Tracking, Patch, Third Party Advisory vendor-advisory x_refsource_ubuntu
https://launchpad.net/bugs/1883840
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://ubuntu.com/USN-4576-1
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://ubuntu.com/USN-4577-1
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://ubuntu.com/USN-4578-1
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://ubuntu.com/USN-4579-1
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://ubuntu.com/USN-4580-1
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20210304-0006/
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2021/dsa-4978
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html
Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html

Scores

CVSS v3 6.3
EPSS 0.0009
EPSS Percentile 25.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H

Details

CWE
CWE-416
Status published
Products (8)
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
linux/linux_kernel
Published Jan 14, 2021
Tracked Since Feb 18, 2026