CVE-2021-4203

Published Mar 25, 2022

Last updated a year ago

Overview

Description
A use-after-free read flaw was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect()) in the Linux kernel. In this flaw, an attacker with a user privileges may crash the system or leak internal kernel information.
Source
secalert@redhat.com
NVD status
Modified

Risk scores

CVSS 3.1

Type
Primary
Base score
6.8
Impact score
5.2
Exploitability score
1.6
Vector string
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H
Severity
MEDIUM

CVSS 2.0

Type
Primary
Base score
4.9
Impact score
4.9
Exploitability score
6.8
Vector string
AV:N/AC:M/Au:S/C:P/I:N/A:P

Weaknesses

secalert@redhat.com
CWE-362
nvd@nist.gov
CWE-362

Social media

Hype score
Not currently trending

Configurations