CVE-2025-39774

Summary

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

iio: adc: rzg2l_adc: Set driver data before enabling runtime PM

When stress-testing the system by repeatedly unbinding and binding the ADC device in a loop, and the ADC is a supplier for another device (e.g., a thermal hardware block that reads temperature through the ADC), it may happen that the ADC device is runtime-resumed immediately after runtime PM is enabled, triggered by its consumer. At this point, since drvdata is not yet set and the driver's runtime PM callbacks rely on it, a crash can occur. To avoid this, set drvdata just after it was allocated.

Affected Software

Weaknesses

References

• https://git.kernel.org/stable/c/e7ce902db071a7b3e696a43d6e14ca57360deee6
• https://git.kernel.org/stable/c/c69e13965f26b8058f538ea8bdbd2d7718cf1fbe

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