thermal: int340x: Add NULL check for adev

Vulnerability 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: ]

References

• https://git.kernel.org/stable/c/d0d21c8e44216fa9afdb3809edf213f3c0a8c060
• https://git.kernel.org/stable/c/bc7b5f782d28942dbdfda70df30ce132694a06de
• https://git.kernel.org/stable/c/3155d5261b518776d1b807d9d922669991bbee56
• https://git.kernel.org/stable/c/6a810c462f099353e908c70619638884cb82229c
• https://git.kernel.org/stable/c/ac2eb7378319e3836cdf3a2c15a0bdf04c50e81d
• https://git.kernel.org/stable/c/953d28a4f459fcbde2d08f51aeca19d6b0f179f3
• https://git.kernel.org/stable/c/0c49f12c77b77a706fd41370c11910635e491845
• https://git.kernel.org/stable/c/8e8f1ddf4186731649df8bc9646017369eb19186
• https://git.kernel.org/stable/c/2542a3f70e563a9e70e7ded314286535a3321bdb