CVE-2025-23136: thermal: int340x: Add NULL check for adev

Description

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

thermal: int340x: Add NULL check for adev

Not all devices have an ACPI companion fwnode, so adev might be NULL.
This is similar to the commit cd2fd6eab480
("platform/x86: int3472: Check for adev == NULL").

Add a check for adev not being set and return -ENODEV in that case to
avoid a possible NULL pointer deref in int3402_thermal_probe().

Note, under the same directory, int3400_thermal_probe() has such a
check.

[ rjw: Subject edit, added Fixes: ]

Classification

CVE ID: CVE-2025-23136

Affected Products

Vendor: Linux

Product: Linux, Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.03% (probability of being exploited)

EPSS Percentile: 8.12% (scored less or equal to compared to others)

EPSS Date: 2025-04-18 (when was this score calculated)

References

Timeline

2025-04-16 15:40:52 UTC
CVE

thermal: int340x: Add NULL check for adev