CVE-2025-21783

gpiolib: Fix crash on error in gpiochip_get_ngpios()

Description

In the Linux kernel, the following vulnerability has been resolved: gpiolib: Fix crash on error in gpiochip_get_ngpios() The gpiochip_get_ngpios() uses chip_*() macros to print messages. However these macros rely on gpiodev to be initialised and set, which is not the case when called via bgpio_init(). In such a case the printing messages will crash on NULL pointer dereference. Replace chip_*() macros by the respective dev_*() ones to avoid such crash.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.02%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/4d9b2b62e1136d10f661ec4c0c268140b6f74f4f patch mailing list
https://git.kernel.org/stable/c/a7052afa9eae2239e25943baa8817a6a56e8aa68 patch mailing list
https://git.kernel.org/stable/c/189fb76215e479c10731baabb50f1a352d2078f5 patch mailing list
https://git.kernel.org/stable/c/7b4aebeecbbd5b5fe73e35fad3f62ed21aa7ef44 patch mailing list

Frequently Asked Questions

What is the severity of CVE-2025-21783?
CVE-2025-21783 has been scored as a medium severity vulnerability.
How to fix CVE-2025-21783?
To fix CVE-2025-21783, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-21783 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-21783 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-21783?
CVE-2025-21783 affects Linux Linux, Linux Linux.
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