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DM: xHCI: array bound checking before it is used 

Array index of "vbdp_devs" may be out of bounds if
"i >= XHCI_MAX_VIRT_PORTS", so index checking is necessary.

Tracked-On: #1252
Signed-off-by: Tianhua Sun <tianhuax.s.sun@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
This commit is contained in:
Tianhua Sun 2019-01-02 13:38:57 +08:00 committed by wenlingz
parent 8ed393a03d
commit 01c8f546e0
1 changed files with 3 additions and 0 deletions
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3
devicemodel/hw/pci/xhci.c
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@ -721,6 +721,9 @@ xhci_vbdp_thread(void *data)
break; break;
} }
if (i >= XHCI_MAX_VIRT_PORTS)
continue;
j = pci_xhci_get_native_port_index_by_path(xdev, j = pci_xhci_get_native_port_index_by_path(xdev,
&xdev->vbdp_devs[i].path); &xdev->vbdp_devs[i].path);
if (j < 0) if (j < 0)