CVE-2026-43143 mfd: core: Add locking around 'mfd_of_node_list'
A race condition in the Linux kernel's MFD core allows attackers to cause system crashes by manipulating a shared list without proper locking.
- 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-2026-43143?
CVE-2026-43143 is a medium-severity vulnerability in Linux kernel, published on 6 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:
mfd: core: Add locking around 'mfd_of_node_list'
Manipulating a list in the kernel isn't safe without some sort of mutual exclusion. Add a mutex any time we access / modify 'mfd_of_node_list' to prevent possible crashes.
Which versions are affected by CVE-2026-43143?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-43143?
Apply the vendor's patch.
Is CVE-2026-43143 being exploited?
There is no known exploitation of CVE-2026-43143 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-43143, DEBIAN-CVE-2026-43143, GHSA-m3xp-x2x9-8qr4, ROOT-OS-DEBIAN-11-CVE-2026-43143, ROOT-OS-UBUNTU-2204-CVE-2026-43143, ROOT-OS-UBUNTU-2404-CVE-2026-43143 and 1 more.