A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. The flaw exists in the pvrdma_ring_init() function in hw/rdma/vmw/pvrdma_dev_ring.c and could occur while handling a "PVRDMA_REG_DSRHIGH" write from the guest. Due to improper initialization of the 'ring->pages' array, rdma_pci_dma_unmap() may be passed an uninitialized pointer as argument, leading to undefined behavior and possible crash of the QEMU process on the host. CREATE(Triage):(User=admin) CVE-2021-3608 (https://nvd.nist.gov/vuln/detail/CVE-2021-3608)
