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

Input: mtk-pmic-keys - fix possible null pointer dereference

In mtk_pmic_keys_probe, the regs parameter is only set if the button is
parsed in the device tree. However, on hardware where the button is left
floating, that node will most likely be removed not to enable that
input. In that case the code will try to dereference a null pointer.

Let's use the regs struct instead as it is defined for all supported
platforms. Note that it is ok setting the key reg even if that latter is
disabled as the interrupt won't be enabled anyway.

https://git.kernel.org/stable/c/09429ddb5a91e9e8f72cd18c012ec4171c2f85ec

https://git.kernel.org/stable/c/11cdb506d0fbf5ac05bf55f5afcb3a215c316490

https://git.kernel.org/stable/c/334d74a798463ceec02a41eb0e2354aaac0d6249

https://git.kernel.org/stable/c/619c05fb176c272ac6cecf723446b39723ee6d97

https://git.kernel.org/stable/c/90fa6015ff83ef1c373cc61b7c924ab2bcbe1801