CVE-2021-3982
Last modified
CVE-2021-3982 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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.. EPSS estimates a 0.29% chance of exploitation in the next 30 days.
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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Gnome | Gnome-Shell | All versions |
References
- https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/2284Issue Tracking, Patch, Third Party Advisory
- https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2060Issue Tracking, Patch, Third Party Advisory
- https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/2284Issue Tracking, Patch, Third Party Advisory
- https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2060Issue Tracking, Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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