*** This bug is a security vulnerability ***
You have been subscribed to a public security bug by Seth Arnold (seth-arnold):
Lock screen should block access to computer until the screen is unlocked. But,
although it was fixed either in extensions, or the lock screen itself in Ubuntu
19.10, it is now present again. I can remove shortcuts from Dash to Dock bar, I
can run whatever app is there. In my view, this is a security flaw that in some
cases can lead to jokes (removing) or even crashing the computer if really
multiple windows of some app are started. And who knows what kind of apps are
there.
I did report it in the past, I also reported the bug in Gnome Bugzilla and the
extension bug reporting app - they were bouncing from one to the other. At some
point the bug disappeared. I think Ubuntu should fix this until something bad
happens. See the attachment.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: gnome-shell 3.36.1-5ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
Uname: Linux 5.4.0-26-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sat Apr 25 17:52:58 2020
DisplayManager: gdm3
InstallationDate: Installed on 2020-04-24 (1 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
RelatedPackageVersions: mutter-common 3.36.1-3ubuntu3
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: gnome-shell (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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Lock screen not really functioning - Gnome Shell extensions visible and active
even in lock screen
https://bugs.launchpad.net/bugs/1875038
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