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(parent: ff6fc3a) | patch
Input: uinput - fix undefined behavior in uinput_validate_absinfo()
authorDmitry Torokhov <dmitry.torokhov@gmail.com>
Mon, 14 Jan 2019 21:54:55 +0000 (13:54 -0800)
committerDmitry Torokhov <dmitry.torokhov@gmail.com>
Mon, 14 Jan 2019 23:34:24 +0000 (15:34 -0800)
commite1d0fd1669db6948cce3e96d9f4eff2a9b02cb73
tree64216b5699248263656b7d53b35174efef742876tree | snapshot
parentff6fc3a08b749161e78718ee9e5e8f5bb3720caecommit | diff
Input: uinput - fix undefined behavior in uinput_validate_absinfo()

An integer overflow may arise in uinput_validate_absinfo() if "max - min"
can't be represented by an "int". We should check for overflow before
trying to use the result.

Reported-by: Kyungtae Kim <kt0755@gmail.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
drivers/input/misc/uinput.c diff | blob | history
Linux Kernel Source Tree.