CVE-2026-43356

Summary

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.

Affected Software

Weaknesses

References

• https://git.kernel.org/stable/c/ba19dd366528b961430f5195c2e382420703074f
• https://git.kernel.org/stable/c/1a48f94c63a078e7b6a2e59a637fc0858dc6510c
• https://git.kernel.org/stable/c/9990cd4f8827bd1ae3fb6eb7407630d8d463c430

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