CVE-2021-3982: Gnome Gnome-Shell

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Linux distributions using CAP_SYS_NICE for gnome-shell may be exposed to a privilege escalation issue. An attacker, with low privilege permissions, may take advantage of the way CAP_SYS_NICE is currently implemented and eventually load code to increase its process scheduler priority leading to possible DoS of other services running in the same machine.

Affected products

• Gnome Gnome-Shell: affected versions not specified

Published 2022-04-29. Last modified 2026-06-17.