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Michal Srb cdf15ab8f9 Xi: Zero target buffer in SProcXSendExtensionEvent. 
Make sure that the xEvent eventT is initialized with zeros, the same way as
in SProcSendEvent.

Some event swapping functions do not overwrite all 32 bytes of xEvent
structure, for example XSecurityAuthorizationRevoked. Two cooperating
clients, one swapped and the other not, can send
XSecurityAuthorizationRevoked event to each other to retrieve old stack data
from X server. This can be potentialy misused to go around ASLR or
stack-protector.

Signed-off-by: Michal Srb <msrb@suse.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
(cherry picked from commit 05442de962)
2017-09-25 15:34:10 -04:00
composite composite: Fix repaint of borders (v2) 2017-01-11 15:00:47 -05:00
config ddx: add new call to purge input devices that weren't added 2016-10-26 15:35:07 +10:00
damageext dix: Remove pointless client-state callbacks 2016-05-11 11:21:08 -04:00
dbe Convert top level extensions to new *allocarray functions 2015-04-21 16:57:08 -07:00
dix dix: Remove clients from input and output ready queues after closing 2017-09-25 15:34:10 -04:00
doc Remove readmask from screen block/wakeup handler 2016-07-18 15:27:51 -04:00
dri3 dri3: Don't do return client->noClientException 2016-09-02 13:41:24 -04:00
exa Remove readmask from screen block/wakeup handler 2016-07-18 15:27:51 -04:00
fb fb: XYPixmap format PutImage includes all planes in depth 2016-10-04 12:15:55 -04:00
glamor glamor: Fix temporary pixmap coordinate offsets 2017-09-25 15:34:10 -04:00
glx glx/dri2: Don't build DRI loader if DRI2 isn't enabled 2016-10-27 14:25:42 +01:00
hw modesetting: Validate the atom for enum properties 2017-09-25 15:34:10 -04:00
include Use arc4random_buf(3) if available to generate cookies. 2017-02-28 14:18:26 -05:00
m4 Add ax_pthread.m4 to m4/ 2016-05-29 19:20:51 -07:00
man Xserver.man: document more transports for -nolisten & -listen options 2015-10-28 14:16:28 -04:00
mi XQuartz: Adopt input_lock() and input_unlock() 2016-09-22 14:55:02 -07:00
miext damage: Validate source pictures bound to windows before unwrapping 2017-02-23 14:55:00 -05:00
os os: Mark client as ready to read when closing due to write failure [100863] 2017-09-25 15:34:10 -04:00
present present: disable page flip only when a slave crtc is active 2017-03-10 11:05:36 -05:00
pseudoramiX Convert top level extensions to new *allocarray functions 2015-04-21 16:57:08 -07:00
randr randr: fix xserver crash when xrandr setprovideroutputsource 2017-01-11 15:04:12 -05:00
record record: Fix OOB access in ProcRecordUnregisterClients 2017-09-22 18:45:59 +02:00
render render: Fix out of boundary heap access 2017-03-15 13:27:11 -04:00
test test: fix distributing scripts 2017-01-11 15:00:53 -05:00
Xext xinerama: Implement graphics exposures for window->pixmap copies (v4) 2017-09-22 18:45:58 +02:00
xfixes dix: Remove pointless client-state callbacks 2016-05-11 11:21:08 -04:00
Xi Xi: Zero target buffer in SProcXSendExtensionEvent. 2017-09-25 15:34:10 -04:00
xkb xkb: fix turbo-repeat of RedirectKey-ed keysyms 2016-09-21 17:33:43 +10:00
.dir-locals.el Add .dir-locals.el 2013-08-17 12:17:36 +02:00
.gitignore .gitignore: Add new autotools file 'test-driver' 2014-04-21 13:41:42 -07:00
autogen.sh autogen: Set a default subject prefix for patches 2016-02-08 17:41:38 -05:00
configure.ac xserver 1.19.3 2017-03-15 13:44:05 -04:00
COPYING modesetting: Merge modesetting's COPYING into the xserver's. 2014-09-15 12:46:02 -07:00
devbook.am doc: Create a script to filter xmlto output 2015-01-05 14:24:06 -08:00
docbook.am docbook.am: embed css styles inside the HTML HEAD element 2011-09-21 14:07:49 -07:00
fix-miregion Change region implementation names to eliminate the 'mi' prefix 2010-06-05 17:47:32 -07:00
fix-miregion-private Change region implementation names to eliminate the 'mi' prefix 2010-06-05 17:47:32 -07:00
fix-patch-whitespace Rename region macros to eliminate screen argument 2010-06-05 18:59:00 -07:00
fix-region Rename region macros to eliminate screen argument 2010-06-05 18:59:00 -07:00
Makefile.am DIST_SUBDIRS needs to include glamor, even if it isn't built 2014-02-13 15:25:56 -08:00
manpages.am Xorg: Add a suid root wrapper 2014-03-12 08:50:05 +01:00
README packaging: provide a default README file #24206 2010-01-27 14:00:17 -08:00
xorg-server.m4 macros: clarify documentation 2012-11-05 13:24:57 -06:00
xorg-server.pc.in xfree86: link modules against Xorg symbols on Cygwin 2012-04-05 21:57:07 -05:00
xserver.ent.in doc: relocate xserver.ent in the package root directory 2011-05-14 11:22:26 -07:00

README 

					X Server

The X server accepts requests from client applications to create windows,
which are (normally rectangular) "virtual screens" that the client program
can draw into.

Windows are then composed on the actual screen by the X server
(or by a separate composite manager) as directed by the window manager,
which usually communicates with the user via graphical controls such as buttons
and draggable titlebars and borders.

For a comprehensive overview of X Server and X Window System, consult the
following article:
http://en.wikipedia.org/wiki/X_server

All questions regarding this software should be directed at the
Xorg mailing list:

        http://lists.freedesktop.org/mailman/listinfo/xorg

Please submit bug reports to the Xorg bugzilla:

        https://bugs.freedesktop.org/enter_bug.cgi?product=xorg

The master development code repository can be found at:

        git://anongit.freedesktop.org/git/xorg/xserver

        http://cgit.freedesktop.org/xorg/xserver

For patch submission instructions, see:

	http://www.x.org/wiki/Development/Documentation/SubmittingPatches

For more information on the git code manager, see:

        http://wiki.x.org/wiki/GitPage