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CVE-2021-20315

MEDIUM
6.1
CVSS Score
Published: February 18, 2022 at 12:00 AM UTC
Updated: June 17, 2026 at 03:33 AM UTC
2 products affected across 2 vendorsGnome ShellStream

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.2%

Description

A locking protection bypass flaw was found in some versions of gnome-shell as shipped within CentOS Stream 8, when the "Application menu" or "Window list" GNOME extensions are enabled. This flaw allows a physical attacker who has access to a locked system to kill existing applications and start new ones as the locked user, even if the session is still locked.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Stream· Centos
95%
8
Gnome Shell· Gnome
95%
v < 3.32.23.32.2-40.el8
Affected range stops below 3.32.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Issue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2006285

CVSS

6.1MEDIUM[email protected]
Attack Vector
PHYSICAL
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-667

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