What is CVE-2021-3982?

CVE-2021-3982 is a medium-severity vulnerability in Gnome Gnome-Shell, classified under Improper Check for Dropped Privileges. CVSS score: 5.5/10. Published 2022-04-29.

How severe is CVE-2021-3982?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Gnome Gnome-Shell

CVE-2021-3982

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: 0.003 (20.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Gnome Gnome-shell
N/a Gnome-shell — versions gnome-shell downstream versions using CAP_SYS_NICE

Weakness classification (CWE)

CWE-273 — Improper Check for Dropped Privileges

References

secalert@redhat.com (Patch, Third Party Advisory, Issue Tracking)
secalert@redhat.com (Patch, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2021-3982?: CVE-2021-3982 is a medium-severity vulnerability in Gnome Gnome-Shell, classified under Improper Check for Dropped Privileges. CVSS score: 5.5/10. Published 2022-04-29.
How severe is CVE-2021-3982?: Medium severity. CVSS v3 base score is 5.5 out of 10.