CVE-2021-47404

In the Linux kernel, the following vulnerability has been resolved: HID: betop: fix slab-out-of-bounds Write in betop_probe 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.

• linux linux kernel (< 4.4.286) • linux linux kernel (>= 4.5 < 4.9.285) • linux linux kernel (>= 4.10 < 4.14.249) • linux linux kernel (>= 4.15 < 4.19.209) • linux linux kernel (>= 4.20 < 5.4.151) • linux linux kernel (>= 5.5 < 5.10.71) • linux linux kernel (>= 5.11 < 5.14.10) • linux linux kernel 5.15