CVE-2022-49323 Information

Description

In the Linux kernel the following vulnerability has been resolved:

iommu/arm-smmu: fix possible null-ptr-deref in arm_smmu_device_probe()

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/3660db29b0305f9a1d95979c7af0f5db6ea99f5d https://git.kernel.org/stable/c/449fc4561762ad9ad85362d5f01f0d0df397457a https://git.kernel.org/stable/c/80776a71340f57d6a4952635fc89f0342072f3ca https://git.kernel.org/stable/c/98dd53a92825747395649f54d23512a13c3ed471 https://git.kernel.org/stable/c/d9ed8af1dee37f181096631fb03729ece98ba816