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[Qemu-devel] [PATCH] usb: xhci: fix info leak when writing event to the


From: Li Qiang
Subject: [Qemu-devel] [PATCH] usb: xhci: fix info leak when writing event to the guest
Date: Tue, 13 Jun 2017 20:39:04 -0700

From: Li Qiang <address@hidden>

In 'xhci_write_event' function, the 'ev_trb' is not full initialized.
This will lead an info leak issue. This patch avoid this.

Signed-off-by: Li Qiang <address@hidden>
---
 hw/usb/hcd-xhci.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c
index a0c7960..537997e 100644
--- a/hw/usb/hcd-xhci.c
+++ b/hw/usb/hcd-xhci.c
@@ -646,6 +646,7 @@ static void xhci_write_event(XHCIState *xhci, XHCIEvent 
*event, int v)
     XHCITRB ev_trb;
     dma_addr_t addr;
 
+    memset(&ev_trb, 0, sizeof(ev_trb));
     ev_trb.parameter = cpu_to_le64(event->ptr);
     ev_trb.status = cpu_to_le32(event->length | (event->ccode << 24));
     ev_trb.control = (event->slotid << 24) | (event->epid << 16) |
-- 
2.7.4




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