CVE-2021-20219

Updated: 2024-11-24 05:20:16.718074

Description:

A denial of service vulnerability was found in n_tty_receive_char_special in drivers/tty/n_tty.c of the Linux kernel. In this flaw a local attacker with a normal user privilege could delay the loop (due to a changing ldata->read_head, and a missing sanity check) and cause a threat to the system availability.


Links NIST CIRCL RHEL Ubuntu

Severity

Severity Score
CVSS Version 2.x LOW 2.1
CVSS Version 3.x MEDIUM 5.5

Status

OS name Project name Version Score Severity Status Errata Last updated

Statement

CentOS 6 ELS kernel 2.6.32 5.5 MEDIUM Not Vulnerable 2021-12-09 07:57:21
CentOS 7 ELS kernel 3.10.0 5.5 MEDIUM Ignored 2023-09-19 09:30:07
CentOS 8.4 ELS kernel 4.18.0 5.5 MEDIUM Ignored 2022-02-10 08:36:35
CentOS 8.5 ELS kernel 4.18.0 5.5 MEDIUM Ignored 2022-02-21 05:39:39
CloudLinux 6 ELS kernel 2.6.32 5.5 MEDIUM Ignored 2022-01-27 11:20:22
Oracle Linux 6 ELS kernel 2.6.32 5.5 MEDIUM Not Vulnerable 2022-11-30 10:10:03
Ubuntu 16.04 ELS linux 4.4.0 5.5 MEDIUM Ignored 2022-01-27 11:20:22
Ubuntu 16.04 ELS linux-hwe 4.15.0 5.5 MEDIUM Ignored 2022-09-28 05:02:41
Ubuntu 18.04 ELS linux 4.15.0 5.5 MEDIUM Ignored 2023-03-02 04:04:11