CVE-2022-48672 of: fdt: fix off-by-one error in unflatten_dt_nodes()
An off-by-one error in the Linux kernel's device tree unflattening function allows buffer overflow, potentially leading to code execution or 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-2022-48672?
CVE-2022-48672 is a high-severity vulnerability in Linux kernel, published on 3 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:
of: fdt: fix off-by-one error in unflatten_dt_nodes()
Commit 78c44d910d3e ("drivers/of: Fix depth when unflattening devicetree") forgot to fix up the depth check in the loop body in unflatten_dt_nodes() which makes it possible to overflow the nps[] buffer...
Found by Linux Verification Center (linuxtesting.org) with the SVACE static analysis tool.
Weakness: CWE-193
Which versions are affected by CVE-2022-48672?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-48672?
Apply the vendor's patch.
Is CVE-2022-48672 being exploited?
There is no known exploitation of CVE-2022-48672 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-48672, GHSA-294m-6544-vprq, UBUNTU-CVE-2022-48672.