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

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-04-16 · updated 2026-10-15
Weakness: CWE-476

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: ]

Affected products

Linux kernel: from 3.18 before 5.4.292; from 5.5 before 5.10.236; from 5.11 before 5.15.180; from 5.16 before 6.1.134; from 6.2 before 6.6.87; from 6.7 before 6.12.23 — fixed in 5.10.236, 5.15.180, 5.4.292, 6.1.134, 6.12.23, 6.13.11

How to fix

Upgrade to a fixed version: Linux kernel 5.10.236, 5.15.180, 5.4.292, 6.1.134. Check the vendor advisory for mitigations.

References

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