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Povilas Kanapickas 0b67785cd1 render: Fix out of bounds access in SProcRenderCompositeGlyphs() 
ZDI-CAN-14192, CVE-2021-4008

This vulnerability was discovered and the fix was suggested by:
Jan-Niklas Sohn working with Trend Micro Zero Day Initiative

Signed-off-by: Povilas Kanapickas <povilas@radix.lt>
(cherry picked from commit ebce7e2d80)
 		2021-12-15 10:41:21 +02:00
.gitlab-ci ci: Install libxcvt from git 2021-08-06 11:29:29 +00:00
Xext Xext: Fix out of bounds access in SProcScreenSaverSuspend() 2021-12-15 10:41:20 +02:00
Xi xinput: Silence a warning from gcc 11 2021-08-17 16:02:44 -04:00
composite meson: hide C API if Xorg is disabled (like autotools) 2021-03-11 00:22:36 +00:00
config config: Fix platform busid parsing when there is no ID_PATH prop 2021-06-25 13:24:51 +03:00
damageext More missing version checks in SProcs 2021-08-08 12:43:01 +00:00
dbe meson: hide C API if Xorg is disabled (like autotools) 2021-03-11 00:22:36 +00:00
dix dix/privates.c: Avoid undefined behaviour after realloc() 2021-10-08 21:38:01 +03:00
doc meson: Implement developer documentation build 2021-08-20 10:26:07 +00:00
dri3 meson: hide C API if Xorg is disabled (like autotools) 2021-03-11 00:22:36 +00:00
exa exa: rename some badly named variables 2020-07-10 06:17:40 +10:00
fb meson: hide C API if Xorg is disabled (like autotools) 2021-03-11 00:22:36 +00:00
glamor glamor: fix free of uninitialised pointers 2021-12-04 18:05:29 +02:00
glx glx: Fix use after free in MakeCurrent 2021-06-21 08:39:38 +02:00
hw remove the PRE_RELEASE message. 2021-12-15 10:41:17 +02:00
include meson: Correctly set DDXOSVERRORF and DDXBEFORERESET on xwin 2021-12-04 18:05:29 +02:00
m4 Add ax_pthread.m4 to m4/ 2016-05-29 19:20:51 -07:00
man Drop DMX DDX 2021-09-07 09:34:31 +00:00
mi Implement gesture processing logic 2021-05-30 13:26:42 +03:00
miext Drop XWayland DDX 2021-09-15 21:49:17 +03:00
os Don't hardcode fps for fake screen 2021-07-29 08:09:00 +00:00
present Don't hardcode fps for fake screen 2021-07-29 08:09:00 +00:00
pseudoramiX Unvalidated lengths 2017-10-10 23:33:34 +02:00
randr Fix RandR leasing for more than 1 simultaneously active lease. 2021-10-21 13:08:01 +03:00
record record: Fix out of bounds access in SwapCreateRegister() 2021-12-15 10:41:18 +02:00
render render: Fix out of bounds access in SProcRenderCompositeGlyphs() 2021-12-15 10:41:21 +02:00
test test: #undef NDEBUG so assert is not compiled away 2021-12-10 00:55:35 -05:00
xfixes xfixes: Fix out of bounds access in *ProcXFixesCreatePointerBarrier() 2021-12-15 10:41:19 +02:00
xkb xkb: fix XkbSetMap check for the keytypes count 2021-12-04 18:05:29 +02:00
.appveyor.yml Drop DMX DDX 2021-09-07 09:34:31 +00:00
.dir-locals.el .dir-locals.el: Add missing final newline 2019-10-01 17:05:28 +00:00
.gitignore .gitignore: Add new autotools file 'test-driver' 2014-04-21 13:41:42 -07:00
.gitlab-ci.yml ci: Install libxcvt from git 2021-08-06 11:29:29 +00:00
.travis.yml travis: Add OSX meson build to matrix 2019-05-02 15:42:58 +00:00
COPYING modesetting: Merge modesetting's COPYING into the xserver's. 2014-09-15 12:46:02 -07:00
Makefile.am Makefile.am: Add missing meson build files to release tarball 2021-11-06 21:22:23 +02:00
README.md Fix spelling/wording issues 2020-07-05 13:07:33 -07:00
autogen.sh autogen: Set a default subject prefix for patches 2016-02-08 17:41:38 -05:00
configure.ac xserver 21.1.1 2021-11-07 01:34:24 +02:00
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
manpages.am man: Fix automake seddery 2018-05-08 12:15:30 -04:00
meson.build xserver 21.1.1 2021-11-07 01:34:24 +02:00
meson_options.txt Drop XWayland DDX 2021-09-15 21:49:17 +03:00
xorg-server.m4 xorg-server.m4: just all cflags instead of just sdkdir 2018-09-20 20:12:24 +01:00
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.md

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: https://en.wikipedia.org/wiki/X_server

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

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

The primary development code repository can be found at:

https://gitlab.freedesktop.org/xorg/xserver

For patch submission instructions, see:

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

As with other projects hosted on freedesktop.org, X.Org follows its Code of Conduct, based on the Contributor Covenant. Please conduct yourself in a respectful and civilized manner when using the above mailing lists, bug trackers, etc:

https://www.freedesktop.org/wiki/CodeOfConduct