CVE-2021-42205 Denial of service in n/a
Local attackers can crash the system by sending a specific IOCTL request to the ELAN Miniport touchpad driver due to double handling.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-42205?
CVE-2021-42205 is a medium-severity denial of service vulnerability in n/a, published on 7 Nov 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
ELAN Miniport touchpad Windows driver before 24.21.51.2, as used in PC hardware from multiple manufacturers, allows local users to cause a system crash by sending a certain IOCTL request, because that request is handled twice.
Weakness: CWE-703
Which versions are affected by CVE-2021-42205?
It affects 1 product.
Products include Lenovo Elan Miniport Touchpad Driver.
How do I fix CVE-2021-42205?
No fix has been published for CVE-2021-42205 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-42205 being exploited?
There is no known exploitation of CVE-2021-42205 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-rpr6-4jj7-qxhw.