Input: uinput - fix undefined behavior in uinput_validate_absinfo()

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commit d77651a227 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Dmitry Torokhov 2019-01-14 13:54:55 -08:00 • committed by Greg Kroah-Hartman

parent 16669bbbd6

commit 50b4046732

1 changed files with 3 additions and 2 deletions

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drivers/input/misc/uinput.c

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