diff -up xen-3.0.3_0-src/tools/ioemu/hw/ne2000.c.cve xen-3.0.3_0-src/tools/ioemu/hw/ne2000.c
--- xen-3.0.3_0-src/tools/ioemu/hw/ne2000.c.cve 2007-09-25 10:27:44.000000000 -0400
+++ xen-3.0.3_0-src/tools/ioemu/hw/ne2000.c 2007-09-25 10:27:47.000000000 -0400
@@ -252,7 +252,7 @@ static void ne2000_receive(void *opaque,
{
NE2000State *s = opaque;
uint8_t *p;
- int total_len, next, avail, len, index, mcast_idx;
+ unsigned int total_len, next, avail, len, index, mcast_idx;
uint8_t buf1[60];
static const uint8_t broadcast_macaddr[6] =
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
@@ -327,7 +327,10 @@ static void ne2000_receive(void *opaque,
/* write packet data */
while (size > 0) {
- avail = s->stop - index;
+ if (index <= s->stop)
+ avail = s->stop - index;
+ else
+ avail = 0;
len = size;
if (len > avail)
len = avail;