Bug 2360188 (CVE-2025-23136)

Summary: CVE-2025-23136 kernel: thermal: int340x: Add NULL check for adev
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-04-16 15:01:51 UTC
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: ]

Comment 1 Avinash Hanwate 2025-04-17 17:00:18 UTC
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025041633-CVE-2025-23136-75e1@gregkh/T