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| H A D | hid-core.c | diff ed9be64eefe26d7d8b0b5b9fa3ffdf425d87a01f Fri Dec 04 18:48:48 CST 2020 Will McVicker <willmcvicker@google.com> HID: make arrays usage and value to be the same
The HID subsystem allows an "HID report field" to have a different
number of "values" and "usages" when it is allocated. When a field
struct is created, the size of the usage array is guaranteed to be at
least as large as the values array, but it may be larger. This leads to
a potential out-of-bounds write in
__hidinput_change_resolution_multipliers() and an out-of-bounds read in
hidinput_count_leds().
To fix this, let's make sure that both the usage and value arrays are
the same size.
Cc: stable@vger.kernel.org
Signed-off-by: Will McVicker <willmcvicker@google.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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