CVE-2023-52627

MEDIUM
Published Mar 26, 2024 Modified Apr 29, 2025 CWE-476

Description

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.

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CVSS v3.1 Score

5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-476 CWE-476

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
debian debian_linux

References

Advisories & Patches

https://git.kernel.org/stable/c/020e71c7ffc25dfe29ed9be6c2d39af7bd7f661f https://git.kernel.org/stable/c/137568aa540a9f587c48ff7d4c51cdba08cfe9a4 https://git.kernel.org/stable/c/1eba6f7ffa295a0eec098c107043074be7cc4ec5 https://git.kernel.org/stable/c/49f322ce1f265935f15e5512da69a399f27a5091 https://git.kernel.org/stable/c/55aca2ce91a63740278502066beaddbd841af9c6 https://git.kernel.org/stable/c/89c4e63324e208a23098f7fb15c00487cecbfed2 https://git.kernel.org/stable/c/020e71c7ffc25dfe29ed9be6c2d39af7bd7f661f https://git.kernel.org/stable/c/137568aa540a9f587c48ff7d4c51cdba08cfe9a4 https://git.kernel.org/stable/c/1eba6f7ffa295a0eec098c107043074be7cc4ec5 https://git.kernel.org/stable/c/49f322ce1f265935f15e5512da69a399f27a5091 https://git.kernel.org/stable/c/55aca2ce91a63740278502066beaddbd841af9c6 https://git.kernel.org/stable/c/89c4e63324e208a23098f7fb15c00487cecbfed2

Frequently Asked Questions

What is CVE-2023-52627? +
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. It has a CVSS v3.1 base score of 5.5 (MEDIUM).
How severe is CVE-2023-52627? +
CVE-2023-52627 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2023-52627? +
CVE-2023-52627 affects products from debian, linux, specifically: debian_linux, linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2023-52627? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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