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Peter Hutterer 66fee1bec4 Cap slot values to the announced maximum
A malicious device may announce N slots but then send a slot index >= N. The
slot state is almost always allocated (definitely the case in libevdev and
true for most callers), so providing a slot number higher than the announced
maximum is likely to lead to invalid dereferences. Don't allow that.
Likewise, don't allow negative slot numbers.

Note that the kernel filters these events anyway, the only way to trigger this
is to change the device fd to something outside the kernel's control.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
2014-03-06 14:30:03 +10:00
doc doc: add a placeholder man page 2013-12-09 08:46:24 +10:00
include/linux include: update linux/input.h for kernel 3.13 2014-01-22 09:15:14 +10:00
libevdev Cap slot values to the announced maximum 2014-03-06 14:30:03 +10:00
m4 Review/update .gitignore files 2013-11-19 09:34:23 +10:00
test Cap slot values to the announced maximum 2014-03-06 14:30:03 +10:00
tools tools: Fix compiler warning 2014-02-26 07:24:46 +10:00
.gitignore Review/update .gitignore files 2013-11-19 09:34:23 +10:00
autogen.sh autogen.sh: remove unneeded m4 configuration workaround 2013-11-19 09:37:06 +10:00
configure.ac libevdev 1.0 2014-02-18 14:51:23 +10:00
COPYING Update COPYING file. 2013-11-15 09:30:10 +10:00
libevdev.pc.in Fix name and version in pkgconfig file 2013-07-24 07:27:17 +10:00
Makefile.am Pass --no-print-directory to make 2013-08-26 07:59:07 +10:00
README.md README: remove the warning, it's stable now 2014-02-11 16:27:50 +10:00

libevdev - wrapper library for evdev input devices

libevdev is a wrapper library for evdev devices. it moves the common tasks when dealing with evdev devices into a library and provides a library interface to the callers, thus avoiding erroneous ioctls, etc.

git://git.freedesktop.org/git/libevdev http://cgit.freedesktop.org/libevdev/

The eventual goal is that libevdev wraps all ioctls available to evdev devices, thus making direct access unnecessary.

Go here for the API documentation: http://www.freedesktop.org/software/libevdev/doc/latest/

File bugs in the freedesktop.org bugzilla: https://bugs.freedesktop.org/enter_bug.cgi?product=libevdev

Patches, questions and general comments should be submitted to the input-tools@lists.freedesktop.org mailing list: http://lists.freedesktop.org/mailman/listinfo/input-tools