Unity

14.04 Lockscreen 'pops under' when YouTube is full screen

Bug #1330032 reported by 4listair on 2014-06-14

This bug report is a duplicate of: Bug #1313280: Fullscreen window set to "Always on Top" in single-monitor will hide the lockscreen. Edit Remove

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	Unity	New	Undecided	Unassigned
	unity (Ubuntu)	New	Undecided	Unassigned

Bug Description

I have marked this bug against Unity but may be incorrect.

When a Youtube video is fullscreen and left until the lockscreen activates (set at: screen off after 10 minutes, lock after 30, require pwd), on returning to the PC, possibly hours later, the now-ended video image is displayed but no mouse operations are possible.

In fact, the lock screen has activated but failed to become uppermost, ie, it has popped under; the screen is locked but that cannot be seen.

At this point, to recover operation: hit enter (to clear the password 'buffer' if any keys have been pressed); type the password and hit enter; the mouse is now operational on the Youtube screen, so click the YouTube lower right minimise button (or press escape).

This is a security vulnerabilty, as the last full-screen image displayed before lock activation remains visible. Until proven otherwise, the impact may not be restricted to YouTube.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: unity 7.2.1+14.04.20140513-0ubuntu2
ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2
Uname: Linux 3.13.0-29-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Sat Jun 14 07:44:34 2014
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
GraphicsCard:
Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0112] (rev 09) (prog-if 00 [VGA controller])
Subsystem: ASRock Incorporation Device [1849:0112]
InstallationDate: Installed on 2014-04-26 (48 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64+mac (20140417)
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-29-generic root=UUID=b496ff7c-0680-4117-9bcc-1bf2bb35be8f ro quiet splash vt.handoff=7
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/25/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P1.60
dmi.board.name: Z68 Pro3-M
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.60:bd10/25/2011:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnZ68Pro3-M:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.
version.compiz: compiz 1:0.9.11+14.04.20140409-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.1
version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Sat Jun 14 07:30:09 2014
xserver.configfile: default
xserver.devices:
input Power Button KEYBOARD, id 6
input Power Button KEYBOARD, id 7
input Logitech USB Laser Mouse MOUSE, id 8
input AT Translated Set 2 keyboard KEYBOARD, id 9
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
product id 494
vendor SAM
xserver.version: 2:1.15.1-0ubuntu2

Tags:

Revision history for this message

4listair (alistair-alistairlang) wrote on 2014-06-14:

BootDmesg.txt Edit (55.8 KiB, text/plain; charset="utf-8")
BootLog.txt Edit (4.5 KiB, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (3.2 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (31.6 KiB, text/plain; charset="utf-8")
DpkgLog.txt Edit (131.1 KiB, text/plain; charset="utf-8")
GconfCompiz.txt Edit (45.6 KiB, text/plain; charset="utf-8")
Lspci.txt Edit (10.1 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (474 bytes, text/plain; charset="utf-8")
MonitorsUser.xml.txt Edit (817 bytes, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (3.6 KiB, text/plain; charset="utf-8")
ProcEnviron.txt Edit (106 bytes, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (2.3 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (4.6 KiB, text/plain; charset="utf-8")
UdevDb.txt Edit (174.6 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (339.6 KiB, text/plain; charset="utf-8")
UnitySupportTest.txt Edit (615 bytes, text/plain; charset="utf-8")
XorgLog.txt Edit (23.3 KiB, text/plain; charset="utf-8")
XorgLogOld.txt Edit (23.7 KiB, text/plain; charset="utf-8")
Xrandr.txt Edit (8.4 KiB, text/plain; charset="utf-8")
xdpyinfo.txt Edit (5.9 KiB, text/plain; charset="utf-8")

Revision history for this message

Seth Arnold (seth-arnold) wrote on 2014-06-16: Bug is not a security issue

Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.

information type:

Private Security → Public