CVE-2021-38204 Use after free in n/a
A use-after-free vulnerability in the Linux kernel's MAX-3421 USB host controller driver allows physically proximate attackers to cause a system panic via device removal.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-38204?
CVE-2021-38204 is a medium-severity use after free vulnerability in Debian Debian Linux, published on 8 Aug 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
drivers/usb/host/max3421-hcd.c in the Linux kernel before 5.13.6 allows physically proximate attackers to cause a denial of service (use-after-free and panic) by removing a MAX-3421 USB device in certain situations.
Weakness: CWE-416
Which versions are affected by CVE-2021-38204?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2021-38204?
Upgrade to a fixed version.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2021-38204 being exploited?
There is no known exploitation of CVE-2021-38204 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as A-196448784, ASB-A-196448784, AZL-6588, DEBIAN-CVE-2021-38204, GHSA-m2xj-w4x7-vj3m, UBUNTU-CVE-2021-38204.