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Olivier Fourdan 69ab094a08 glamor: Avoid overflow between box32 and box16 box 
glamor_compute_transform_clipped_regions() uses a temporary box32
internally which is copied back to a box16 to init the regions16,
thus causing a potential overflow.

If an overflow occurs, the given region is invalid and the pixmap
init region will fail.

Simply check that the coordinates won't overflow when copying back to
the box16, avoiding a crash later down the line in glamor.

Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=101894
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Tested-by: Fabrice Bellet <fabrice@bellet.info>
Reviewed-by: Adam Jackson <ajax@redhat.com>
(cherry picked from commit 9869dcb349)
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: Disallow GenericEvent in SendEvent request. 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: Avoid overflow between box32 and box16 box 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 xwayland: Fix a segfault with pointer locking 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: Use RRTransformEqual in RRCrtcPendingTransform 2017-09-25 15:34:10 -04:00
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: Test exact size of XIBarrierReleasePointer 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