CVE-2020-16119 Information

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.

CVSS Vector

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

Reference

https://launchpad.net/bugs/1883840 https://ubuntu.com/USN-4580-1 https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal/commit/?id=01872cb896c76cedeabe93a08456976ab55ad695 https://ubuntu.com/USN-4578-1 https://ubuntu.com/USN-4579-1 https://ubuntu.com/USN-4576-1 https://ubuntu.com/USN-4577-1 https://lore.kernel.org/netdev/20201013171849.236025-1-kleber.souza@canonical.com/T/ 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

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8