CVE-2024-56570 ovl: Filter invalid inodes with missing lookup function
A missing lookup function in overlayfs directory inodes can cause kernel errors, leading to a denial of service.
- 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-2024-56570?
CVE-2024-56570 is a high-severity vulnerability in Linux kernel, published on 27 Dec 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:
ovl: Filter invalid inodes with missing lookup function
Add a check to the ovl_dentry_weird() function to prevent the processing of directory inodes that lack the lookup function. This is important because such inodes can cause errors in overlayfs when passed to the lowerstack.
Which versions are affected by CVE-2024-56570?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-56570?
Apply the vendor's patch.
Is CVE-2024-56570 being exploited?
There is no known exploitation of CVE-2024-56570 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-56570, DEBIAN-CVE-2024-56570, GHSA-54v6-wx8m-5hw2, UBUNTU-CVE-2024-56570.