Commit 94c12b06 authored Jun 23, 2016 by Scott Bauer Committed by Stuart Scott May 16, 2017

BACKPORT: UPSTREAM: HID: hiddev: validate num_values for HIDIOCGUSAGES, HIDIOCSUSAGES commands


This patch validates the num_values parameter from userland during the
HIDIOCGUSAGES and HIDIOCSUSAGES commands. Previously, if the report id was set
to HID_REPORT_ID_UNKNOWN, we would fail to validate the num_values parameter
leading to a heap overflow.

Signed-off-by: Scott Bauer <sbauer@plzdonthack.me>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Bug: 36251182
Change-Id: I135b15c7de26b59923869f637326062bfb7af513

parent 644ff453

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