Commit e5cc361e authored by Dan Carpenter's avatar Dan Carpenter Committed by David S. Miller
Browse files

octeontx2-pf: fix a buffer overflow in otx2_set_rxfh_context() 



This function is called from ethtool_set_rxfh() and "*rss_context"
comes from the user.  Add some bounds checking to prevent memory
corruption.

Fixes: 81a43620 ("octeontx2-pf: Add RSS multi group support")
Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Acked-by: default avatarSunil Goutham <sgoutham@marvell.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6e800557

drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c

+4 −0
Original line number Diff line number Diff line
@@ -786,6 +786,10 @@ static int otx2_set_rxfh_context(struct net_device *dev, const u32 *indir, 
	if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)

		return -EOPNOTSUPP;



	if (*rss_context != ETH_RXFH_CONTEXT_ALLOC &&

	    *rss_context >= MAX_RSS_GROUPS)

		return -EINVAL;



	rss = &pfvf->hw.rss_info;



	if (!rss->enable) {