From: P J P <[email protected]> Ne2000 NIC uses ring buffer of NE2000_MEM_SIZE(49152) bytes to process network packets. While receiving packets via ne2000_receive() routine, a local 'index' variable could exceed the ring buffer size, leading to an infinite loop situation.
Reported-by: Qinghao Tang <[email protected]> Signed-off-by: P J P <[email protected]> Signed-off-by: Stefan Hajnoczi <[email protected]> --- hw/net/ne2000.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/net/ne2000.c b/hw/net/ne2000.c index 3798a3b..010f9ef 100644 --- a/hw/net/ne2000.c +++ b/hw/net/ne2000.c @@ -247,7 +247,7 @@ ssize_t ne2000_receive(NetClientState *nc, const uint8_t *buf, size_t size_) if (index <= s->stop) avail = s->stop - index; else - avail = 0; + break; len = size; if (len > avail) len = avail; -- 2.4.3
