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[xhci] Avoid accessing beyond end of endpoint context array 

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown 2017-03-21 16:22:42 +02:00
parent 501fa53b25
commit 6124c0ebfa
1 changed files with 1 additions and 1 deletions
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2
src/drivers/usb/xhci.c
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@ -1558,7 +1558,7 @@ static void xhci_transfer ( struct xhci_device *xhci,
}
/* Identify endpoint */
if ( ( trb->endpoint > XHCI_CTX_END ) ||
if ( ( trb->endpoint >= XHCI_CTX_END ) ||
( ( endpoint = slot->endpoint[trb->endpoint] ) == NULL ) ) {
DBGC ( xhci, "XHCI %s slot %d transfer event invalid epid "
"%d:\n", xhci->name, slot->id, trb->endpoint );