CVE-2026-46241 spi: mpc52xx: fix use-after-free on registration failure
A use-after-free vulnerability in the Linux kernel's mpc52xx SPI driver allows attackers to potentially execute code or cause a denial of service upon registration failure.
- 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-2026-46241?
CVE-2026-46241 is a high-severity use after free vulnerability in Linux kernel, published on 28 May 2026. 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:
spi: mpc52xx: fix use-after-free on registration failure
Make sure to disable and free the interrupts in case controller registration fails to avoid a potential use-after-free and resource leak.
This issue was flagged by Sashiko when reviewing a controller deregistration fix.
Weakness: CWE-416
Which versions are affected by CVE-2026-46241?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-46241?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-46241 being exploited?
There is no known exploitation of CVE-2026-46241 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-89124, BELL-CVE-2026-46241, DEBIAN-CVE-2026-46241, GHSA-529r-6cww-q8vr, ROOT-OS-DEBIAN-11-CVE-2026-46241, ROOT-OS-DEBIAN-12-CVE-2026-46241 and 3 more.