CVE-2021-47404: Linux Kernel

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Linux Linux Kernel: before 4.4.286 (fixed in 4.4.286); from 4.5, before 4.9.285 (fixed in 4.9.285); from 4.10, before 4.14.249 (fixed in 4.14.249); from 4.15, before 4.19.209 (fixed in 4.19.209); from 4.20, before 5.4.151 (fixed in 5.4.151); from 5.5, before 5.10.71 (fixed in 5.10.71); …

Published 2024-05-21. Last modified 2026-06-17.