Integer underflow in X.org Server - CVE-2021-3472

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Main Vulnerability Database Vulnerabilities #VU52197

Integer underflow in X.org Server - CVE-2021-3472

Published: April 13, 2021


Vulnerability identifier: #VU52197
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Clear
CVE-ID: CVE-2021-3472
CWE-ID: CWE-191
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: X.org
Affected software:
X.org Server

Detailed vulnerability description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to integer underflow within the XChangeFeedbackControl() function. A local user can run a specially crafted program to trigger integer underflow and escalate privileges on the system.


How to mitigate CVE-2021-3472

Install updates from vendor's website.

Sources