On Sat, 23 Aug 2025, Tomasz Pakuła wrote:
> As reported by Dan Carpenter, if the axes_enable field wasn't found,
> trying to find the axes themselves will result in a null pointer
> dereference. This could only occur with a broken PID descriptor, but
> it's worth protecting from.
>
> Exit early if the axes_enable wasn't found AND add a gate to the
> pidff_find_special_keys to exit early if the passed HID field is null.
> This will protect again null dereferencing in the future and properly
> return 0 found special keys.
>
> Fixes:
> Commit 1d72e7bd340b ("HID: pidff: Add support for AXES_ENABLE field")
> Made on top of for-6.18/pidff
>
> Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> Signed-off-by: Tomasz Pakuła <tomasz.pakula.oficjalny@xxxxxxxxx>
Applied to hid.git#for-6.18/pidff, thanks.
--
Jiri Kosina
SUSE Labs
