CVE-2023-52627: iio: adc: ad7091r: Allow users to configure device events
In the Linux kernel, the following vulnerability has been resolved:
iio: adc: ad7091r: Allow users to configure device events
AD7091R-5 devices are supported by the ad7091r-5 driver together with the ad7091r-base driver. Those drivers declared iio events for notifying user space when ADC readings fall bellow the thresholds of low limit registers or above the values set in high limit registers. However, to configure iio events and their thresholds, a set of callback functions must be implemented and those were not present until now. The consequence of trying to configure ad7091r-5 events without the proper callback functions was a null pointer dereference in the kernel because the pointers to the callback functions were not set.
Implement event configuration callbacks allowing users to read/write event thresholds and enable/disable event generation.
Since the event spec structs are generic to AD7091R devices, also move those from the ad7091r-5 driver the base driver so they can be reused when support for ad7091r-2/-4/-8 be added.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2023-52627?
CVE-2023-52627 has a moderate severity rating as it affects the configuration of device events in the Linux kernel.
Which versions of the Linux package are affected by CVE-2023-52627?
CVE-2023-52627 affects specific versions including 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.119-1, 6.12.11-1, and 6.12.12-1.
How do I fix CVE-2023-52627?
To fix CVE-2023-52627, upgrade the Linux kernel to a version that is not affected by this vulnerability.
What is the vulnerability CVE-2023-52627 about?
CVE-2023-52627 allows users to configure device events improperly in the Linux kernel's iio subsystem.
Is there a workaround for CVE-2023-52627?
There is no officially provided workaround for CVE-2023-52627, so updating the kernel is the recommended course of action.