CVE-2021-47611 mac80211: validate extended element ID is present
A missing validation in the Linux kernel mac80211 subsystem can cause a null pointer dereference, leading to a denial of service.
- 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-2021-47611?
CVE-2021-47611 is a high-severity vulnerability in Linux kernel, published on 19 Jun 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:
mac80211: validate extended element ID is present
Before attempting to parse an extended element, verify that the extended element ID is present.
Which versions are affected by CVE-2021-47611?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2021-47611?
Apply the vendor's patch.
Is CVE-2021-47611 being exploited?
There is no known exploitation of CVE-2021-47611 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2021-47611, GHSA-5w38-rv9h-5rf4, UBUNTU-CVE-2021-47611.