CVE-2026-43356 iio: imu: adis: Fix NULL pointer dereference in adis_init
A NULL pointer dereference in the Linux kernel's adis_init function allows local attackers to cause a system crash via specific IMU drivers.
- 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-2026-43356?
CVE-2026-43356 is a medium-severity vulnerability in Linux kernel, published on 8 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:
iio: imu: adis: Fix NULL pointer dereference in adis_init
The adis_init() function dereferences adis->ops to check if the individual function pointers (write, read, reset) are NULL, but does not first check if adis->ops itself is NULL.
Drivers like adis16480, adis16490, adis16545 and others do not set custom ops and rely on adis_init() assigning the defaults. Since struct adis is zero-initialized by devm_iio_device_alloc(), adis->ops is NULL when adis_init() is called, causing a NULL pointer dereference:
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 pc : adis_init+0xc0/0x118 Call trace: adis_init+0xc0/0x118 adis16480_probe+0xe0/0x670
Fix this by checking if adis->ops is NULL before dereferencing it, falling through to assign the default ops in that case.
Weakness: CWE-476
Which versions are affected by CVE-2026-43356?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-43356?
Apply the vendor's patch.
Is CVE-2026-43356 being exploited?
There is no known exploitation of CVE-2026-43356 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-43356, DEBIAN-CVE-2026-43356, GHSA-6g6f-cc29-q2wg, UBUNTU-CVE-2026-43356.