CVE-2021-32537 Realtek High definition audio Windows driver crashed
Local attackers can crash the system by sending special strings to the Realtek High Definition Audio kernel driver.
- 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-2021-32537?
CVE-2021-32537 is a medium-severity denial of service vulnerability in Realtek HDA driver, published on 7 Jul 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Realtek HAD contains a driver crashed vulnerability which allows local side attackers to send a special string to the kernel driver in a user’s mode. Due to unexpected commands, the kernel driver will cause the system crashed.
Weakness: CWE-119
Which versions are affected by CVE-2021-32537?
It affects 1 product.
Products include Realtek Hda Driver.
How do I fix CVE-2021-32537?
No fix has been published for CVE-2021-32537 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-2021-32537 being exploited?
There is no known exploitation of CVE-2021-32537 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-crfq-x56q-fh5h.