CVE-2021-0512

A flaw out of bounds memory write in the Linux kernel HID subsystem was found in the way user attach USB or other HID device that generates incorrect data inside HID report field. A local user could use this flaw to crash the system or possibly escalate their privileges on the system.

For Red Hat Enterprise Linux 7 only out of bounds memory read possible instead of write and no code that depends on this memory read, so considering the impact Moderate instead of Important. Both this has very low chances of being exploited in the wild: attacker either need to physically plug a malicious device in a USB port or attacker would have to use uhid or any other virtual USB implementation, meaning that likely already have root access be able to trigger that.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.