CVE-2025-68330

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

iio: accel: bmc150: Fix irq assumption regression

The code in bmc150-accel-core.c unconditionally calls

bmc150_accel_set_interrupt() in the iio_buffer_setup_ops,

such as on the runtime PM resume path giving a kernel

splat like this if the device has no interrupts:

Unable to handle kernel NULL pointer dereference at virtual

address 00000001 when read

PC is at bmc150_accel_set_interrupt+0x98/0x194

LR is at __pm_runtime_resume+0x5c/0x64

(...)

Call trace:

bmc150_accel_set_interrupt from bmc150_accel_buffer_postenable+0x40/0x108

bmc150_accel_buffer_postenable from __iio_update_buffers+0xbe0/0xcbc

__iio_update_buffers from enable_store+0x84/0xc8

enable_store from kernfs_fop_write_iter+0x154/0x1b4

This bug seems to have been in the driver since the beginning,

but it only manifests recently, I do not know why.

Store the IRQ number in the state struct, as this is a common

pattern in other drivers, then use this to deter

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References