CVE-2022-48638 cgroup: cgroup_get_from_id() must check the looked-up kn is a directory
A missing directory check in the Linux kernel cgroup subsystem allows local attackers to trigger a kernel panic via a crafted cgroup ID.
- 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-2022-48638?
CVE-2022-48638 is a medium-severity vulnerability in Linux kernel, published on 28 Apr 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:
cgroup: cgroup_get_from_id() must check the looked-up kn is a directory
cgroup has to be one kernfs dir, otherwise kernel panic is caused, especially cgroup id is provide from userspace.
Which versions are affected by CVE-2022-48638?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-48638?
Apply the vendor's patch.
Is CVE-2022-48638 being exploited?
There is no known exploitation of CVE-2022-48638 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-48638, GHSA-ggqq-32pw-pm22, UBUNTU-CVE-2022-48638.