Laurent Fousse
2011-May-20 09:14 UTC
[Secure-testing-team] Bug#627382: xscreensaver: Fails to lock screen
Package: xscreensaver
Version: 5.13-1
Severity: grave
Tags: security
Justification: user security hole
Hello,
Steps to reproduce:
1) launch xscreensaver
2) launch "xscreensaver-command -lock" in another terminal.
3) The screen starts to turn blank, but returns to normal again
immediately after turning fully blank.
At this point xscreensaver has exited with the following message:
##############################################################################
xscreensaver: 11:05:19: X Error! PLEASE REPORT THIS BUG.
xscreensaver: 11:05:19: screen 0/0: 0xaf, 0x0, 0x1a00001
##############################################################################
X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 131 (DPMS)
Minor opcode of failed request: 6 (DPMSForceLevel)
Serial number of failed request: 655
Current serial number in output stream: 656
#######################################################################
If at all possible, please re-run xscreensaver with the command
line arguments `-sync -verbose -log log.txt'', and reproduce this
bug. That will cause xscreensaver to dump a `core'' file to the
current directory. Please include the stack trace from that core
file in your bug report. *DO NOT* mail the core file itself! That
won''t work. A "log.txt" file will also be written. Please
*do*
include the complete "log.txt" file with your bug report.
http://www.jwz.org/xscreensaver/bugs.html explains how to create
the most useful bug reports, and how to examine core files.
The more information you can provide, the better. But please
report this bug, regardless!
#######################################################################
When I try to reproduce the problem with "xscreensaver -sync -verbose -log
log.txt",
the screensaver does not exit but is stuck at 100% CPU and not
responding.
It seems they have the same problem in Fedora:
https://bugzilla.redhat.com/show_bug.cgi?id=703483
Laurent.
-- System Information:
Debian Release: wheezy/sid
APT prefers unstable
APT policy: (500, ''unstable''), (500,
''stable''), (1, ''experimental'')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.38-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages xscreensaver depends on:
ii libatk1.0-0 2.0.0-1 The ATK accessibility toolkit
ii libc6 2.13-4 Embedded GNU C Library: Shared lib
ii libcairo2 1.10.2-6 The Cairo 2D vector graphics libra
ii libfontconfig1 2.8.0-2.2 generic font configuration library
ii libfreetype6 2.4.4-1 FreeType 2 font engine, shared lib
ii libgdk-pixbuf2.0-0 2.23.3-3 GDK Pixbuf library
ii libglade2-0 1:2.6.4-1 library to load .glade files at ru
ii libglib2.0-0 2.28.6-1 The GLib library of C routines
ii libgtk2.0-0 2.24.4-3 The GTK+ graphical user interface
ii libice6 2:1.0.7-1 X11 Inter-Client Exchange library
ii libpam0g 1.1.2-3 Pluggable Authentication Modules l
ii libpango1.0-0 1.28.3-6 Layout and rendering of internatio
ii libsm6 2:1.2.0-1 X11 Session Management library
ii libx11-6 2:1.4.3-1 X11 client-side library
ii libxext6 2:1.3.0-1 X11 miscellaneous extension librar
ii libxi6 2:1.4.2-1 X11 Input extension library
ii libxinerama1 2:1.1.1-1 X11 Xinerama extension library
ii libxml2 2.7.8.dfsg-2+b1 GNOME XML library
ii libxmu6 2:1.1.0-2 X11 miscellaneous utility library
ii libxpm4 1:3.5.9-1 X11 pixmap library
ii libxrandr2 2:1.3.1-1 X11 RandR extension library
ii libxrender1 1:0.9.6-1 X Rendering Extension client libra
ii libxt6 1:1.1.1-1 X11 toolkit intrinsics library
ii libxxf86vm1 1:1.1.1-1 X11 XFree86 video mode extension l
ii xscreensaver-data 5.13-1 data files to be shared among scre
Versions of packages xscreensaver recommends:
ii libjpeg-progs 8c-1 Programs for manipulating JPEG fil
ii perl [perl5] 5.10.1-20 Larry Wall''s Practical
Extraction
ii wamerican [wordlist 6-3 American English dictionary words
ii xli 1.17.0+20061110-3+b1 command line tool for viewing imag
Versions of packages xscreensaver suggests:
ii chromium-browser [w 9.0.597.107~r75357-1 Chromium browser
ii epiphany-browser [w 2.30.6-2 Intuitive GNOME web browser
pn fortune <none> (no description available)
ii gdm3 2.30.5-10 Next generation GNOME Display Mana
ii iceweasel [www-brow 3.5.19-2 Web browser based on Firefox
ii midori [www-browser 0.3.6-1 fast, lightweight graphical web br
pn qcam | streamer <none> (no description available)
ii w3m [www-browser] 0.5.3-2+b1 WWW browsable pager with excellent
pn xdaliclock <none> (no description available)
pn xfishtank <none> (no description available)
pn xscreensaver-gl <none> (no description available)
-- no debconf information