CVE-2021-3982 - CVE House
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Status published Medium CVE-2021-3982

Linux distributions using CAP_SYS_NICE for gnome-shell may be exposed to...

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

gnome-shell
Vulnerable Versions:
gnome-shell downstream versions using CAP_SYS_NICE

Timeline

Official Publish: April 29th, 2022
Last Modified: August 3rd, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

CWE-273

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.