CVE-2021-47474 comedi: vmk80xx: fix bulk-buffer overflow
A malicious USB device can trigger a buffer overflow in the vmk80xx driver, potentially leading to code execution or system crash.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-47474?
CVE-2021-47474 is a high-severity memory corruption vulnerability in Linux kernel, published on 22 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
comedi: vmk80xx: fix bulk-buffer overflow
The driver is using endpoint-sized buffers but must not assume that the tx and rx buffers are of equal size or a malicious device could overflow the slab-allocated receive buffer when doing bulk transfers.
Weakness: CWE-787
Which versions are affected by CVE-2021-47474?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2021-47474?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-47474 being exploited?
There is no known exploitation of CVE-2021-47474 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2021-47474, GHSA-4v89-q9h7-p6vx, UBUNTU-CVE-2021-47474.