CVE-2024-56689: PCI: endpoint: epf-mhi: Avoid NULL dereference if DT lacks 'mmio'

First published: Sat Dec 28 2024(Updated: )

In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: epf-mhi: Avoid NULL dereference if DT lacks 'mmio' If platform_get_resource_byname() fails and returns NULL because DT lacks an 'mmio' property for the MHI endpoint, dereferencing res->start will cause a NULL pointer access. Add a check to prevent it. [kwilczynski: error message update per the review feedback] [bhelgaas: commit log]

Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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