CVE: CVE-2018-20191 Upstream-Status: Backport [https://git.qemu.org/?p=qemu.git;a=commit;h=2aa8645] Signed-off-by: Kai Kang From 2aa86456fb938a11f2b7bd57c8643c213218681c Mon Sep 17 00:00:00 2001 From: Prasad J Pandit Date: Thu, 13 Dec 2018 01:00:35 +0530 Subject: [PATCH] pvrdma: add uar_read routine Define skeleton 'uar_read' routine. Avoid NULL dereference. Reported-by: Li Qiang Signed-off-by: Prasad J Pandit Reviewed-by: Marcel Apfelbaum Signed-off-by: Marcel Apfelbaum --- hw/rdma/vmw/pvrdma_main.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/hw/rdma/vmw/pvrdma_main.c b/hw/rdma/vmw/pvrdma_main.c index 64de16fb52..838ad8a949 100644 --- a/hw/rdma/vmw/pvrdma_main.c +++ b/hw/rdma/vmw/pvrdma_main.c @@ -448,6 +448,11 @@ static const MemoryRegionOps regs_ops = { }, }; +static uint64_t uar_read(void *opaque, hwaddr addr, unsigned size) +{ + return 0xffffffff; +} + static void uar_write(void *opaque, hwaddr addr, uint64_t val, unsigned size) { PVRDMADev *dev = opaque; @@ -489,6 +494,7 @@ static void uar_write(void *opaque, hwaddr addr, uint64_t val, unsigned size) } static const MemoryRegionOps uar_ops = { + .read = uar_read, .write = uar_write, .endianness = DEVICE_LITTLE_ENDIAN, .impl = { -- 2.20.1