CVE-2021-4011
xorg-x11-server: SwapCreateRegister out-of-bounds access
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · December 14, 2021
Updated · March 19, 2026
Description
A flaw was found in xorg-x11-server where an out-of-bounds access can occur in the SwapCreateRegister function.
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.
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 · 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer