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CVE-2021-3982 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/2284	CVE	Issue TrackingPatchThird Party Advisory
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2060	CVE	Issue TrackingPatchThird Party Advisory
https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/2284	[email protected]	Issue TrackingPatchThird Party Advisory
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2060	[email protected]	Issue TrackingPatchThird Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-273	Improper Check for Dropped Privileges	[email protected]
CWE-273	Improper Check for Dropped Privileges	[email protected]

Affected Products

Product	Versions
gnome gnome-shell	All versions
CPE cpe:2.3:a:gnome:gnome-shell:-:::::::* Remediation No remediation found in references.

Change History

6 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Feb 3, 2023	Modified Analysis	[email protected]
Nov 28, 2022	CVE Modified	[email protected]
May 11, 2022	Initial Analysis	[email protected]