CVE-2024-56568 iommu/arm-smmu: Defer probe of clients after smmu device bound

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu: Defer probe of clients after smmu device bound Null pointer dereference occurs due to a race between smmu driver probe and client driver probe, when ofdmaconfigure for client is called after the iommudeviceregiste...

CVE-2024-56568

CVE-2024-56568 affects the Linux kernel IOMMU/arm-smmu stack. A race between the smmu driver’s probe and a client driver’s probe can cause a NULL pointer dereference when of_dma_configure() runs after iommu_device_register() but before the smmu driver is fully bound. The race occurs during defere...