CVE-2025-40029 bus: fsl-mc: Check return value of platform_get_resource()
A missing return value check in the fsl-mc bus driver can cause a NULL pointer dereference, leading to a system crash.
- 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-2025-40029?
CVE-2025-40029 is a vulnerability in Linux, published on 28 Oct 2025. 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:
bus: fsl-mc: Check return value of platform_get_resource()
platform_get_resource() returns NULL in case of failure, so check its return value and propagate the error in order to prevent NULL pointer dereference.
Which versions are affected by CVE-2025-40029?
How do I fix CVE-2025-40029?
Apply the vendor's patch.
Is CVE-2025-40029 being exploited?
There is no known exploitation of CVE-2025-40029 in the wild and no public exploit code.
Sources
Also known as AZL-68834, BELL-CVE-2025-40029, DEBIAN-CVE-2025-40029, GHSA-cv4f-qx52-9x29, ROOT-OS-DEBIAN-11-CVE-2025-40029, ROOT-OS-DEBIAN-12-CVE-2025-40029 and 4 more.