CVE-2021-3472

xorg-x11-server: XChangeFeedbackControl integer underflow leads to privilege escalation

Loading…

Severity

Important

Red Hat Product Security

7.8

CVSS 3.1

Review impact separately from score.

Published · April 13, 2021

Updated · November 22, 2025

Description

A flaw was found in xorg-x11-server. An interger underflow can occur in xserver which can lead to a local privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Statement

Xorg server does not run with root privileges in Red Hat Enterprise Linux 8, therefore this flaw has been rated as having moderate impact for Red Hat Enterprise linux 8.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-191 · Integer Underflow (Wrap or Wraparound)