HID: betop: fix slab-out-of-bounds Write in betop_probe

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Syzbot reported slab-out-of-bounds Write bug in hid-betopff driver.
The problem is the driver assumes the device must have an input report but
some malicious devices violate this assumption.

So this patch checks hid_device's input is non empty before it's been used.

Reported-by: syzbot+07efed3bc5a1407bd742@syzkaller.appspotmail.com
Signed-off-by: F.A. SULAIMAN <asha.16@itfac.mrt.ac.lk>
Reviewed-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

...

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F.A.Sulaiman 2021-08-24 20:37:30 +05:30 • committed by Mauro Carvalho Chehab

parent 2990cd10e1

commit 689e453a9b

1 changed files with 10 additions and 3 deletions

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drivers/hid/hid-betopff.c

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