[dpdk-dev] [PATCH 3/3] vhost: fix possible out of bound access

Ferruh Yigit ferruh.yigit at intel.com
Sun Oct 28 02:08:46 CET 2018


Fixes: d7280c9fffcb ("vhost: support selective datapath")
Cc: stable at dpdk.org

Signed-off-by: Ferruh Yigit <ferruh.yigit at intel.com>
---
 lib/librte_vhost/vdpa.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/librte_vhost/vdpa.c b/lib/librte_vhost/vdpa.c
index c2c5dff1d..e7d849ee0 100644
--- a/lib/librte_vhost/vdpa.c
+++ b/lib/librte_vhost/vdpa.c
@@ -63,6 +63,9 @@ rte_vdpa_register_device(struct rte_vdpa_dev_addr *addr,
 			break;
 	}
 
+	if (i == MAX_VHOST_DEVICE)
+		return -1;
+
 	sprintf(device_name, "vdpa-dev-%d", i);
 	dev = rte_zmalloc(device_name, sizeof(struct rte_vdpa_device),
 			RTE_CACHE_LINE_SIZE);
-- 
2.17.2



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