CVE-2022-49449 Information

Description

In the Linux kernel the following vulnerability has been resolved:

pinctrl: renesas: rzn1: Fix possible null-ptr-deref in sh_pfc_map_resources()

It will cause null-ptr-deref when using ‘res’ if platform_get_resource() returns NULL so move using ‘res’ after devm_ioremap_resource() that will check it to avoid null-ptr-deref. And use devm_platform_get_and_ioremap_resource() to simplify code.

Reference

https://git.kernel.org/stable/c/01f9e02e0f13df3fd291676dc80054e977be1601 https://git.kernel.org/stable/c/2f661477c2bb8068194dbba9738d05219f111c6e https://git.kernel.org/stable/c/34c719b8fdfbd0c7c54cae56e6b0f16e9f8bf03e https://git.kernel.org/stable/c/b646e0cfeb38bf5f1944fd548f1dfa9b129fa00c https://git.kernel.org/stable/c/c16b59d445135c8026a04e388d8b2762feaa3b3b