Commit 8b5cc5ef authored by Stephen Hemminger's avatar Stephen Hemminger Committed by David S. Miller

[IPX]: Header length validation needed

This patch will linearize and check there is enough data.
It handles the pprop case as well as avoiding a whole audit of
the routing code.
Signed-off-by: default avatarStephen Hemminger <shemminger@osdl.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d14cc9a3
...@@ -1646,7 +1646,8 @@ static int ipx_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_ty ...@@ -1646,7 +1646,8 @@ static int ipx_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_ty
ipx_pktsize = ntohs(ipx->ipx_pktsize); ipx_pktsize = ntohs(ipx->ipx_pktsize);
/* Too small or invalid header? */ /* Too small or invalid header? */
if (ipx_pktsize < sizeof(struct ipxhdr) || ipx_pktsize > skb->len) if (ipx_pktsize < sizeof(struct ipxhdr) ||
!pskb_may_pull(skb, ipx_pktsize))
goto drop; goto drop;
if (ipx->ipx_checksum != IPX_NO_CHECKSUM && if (ipx->ipx_checksum != IPX_NO_CHECKSUM &&
......
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