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Date:   Sun, 20 Feb 2022 18:44:29 +0300
From:   Pavel Skripkin <>
To:     syzbot <>,,,,,,,,,
Subject: Re: [syzbot] KASAN: slab-out-of-bounds Read in thrustmaster_probe

On 2/20/22 18:27, syzbot wrote:
> Hello,
> syzbot found the following issue on:
> HEAD commit:    c5d9ae265b10 Merge tag 'for-linus' of git://
> git tree:       upstream
> console output:
> kernel config:
> dashboard link:
> compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
> syz repro:
> C reproducer:
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by:
> usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x81 has invalid wMaxPacketSize 0
> usb 1-1: New USB device found, idVendor=044f, idProduct=b65d, bcdDevice= 0.40
> usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
> usb 1-1: config 0 descriptor??
> hid-thrustmaster 0003:044F:B65D.0001: unknown main item tag 0x0
> hid-thrustmaster 0003:044F:B65D.0001: hidraw0: USB HID v0.00 Device [HID 044f:b65d] on usb-dummy_hcd.0-1/input0
> ==================================================================
> BUG: KASAN: slab-out-of-bounds in thrustmaster_interrupts drivers/hid/hid-thrustmaster.c:162 [inline]
> BUG: KASAN: slab-out-of-bounds in thrustmaster_probe+0x8d5/0xb50 drivers/hid/hid-thrustmaster.c:330
> Read of size 1 at addr ffff88807f1a59d2 by task kworker/1:1/35

Looks like missing check for malicious device. Need to check number of 
endpoints before accessing endpoints array

#syz test
git:// master

With regards,
Pavel Skripkin
View attachment "ph" of type "text/plain" (494 bytes)

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