[dpdk-dev] [PATCH] kni: fix possible buffer overflow
Ferruh Yigit
ferruh.yigit at intel.com
Thu Jul 11 14:35:07 CEST 2019
'kni_net_rx_lo_fifo()' can get segmented buffers, using 'pkt_len' for
that case will be wrong and some values can cause buffer overflow
in destination mbuf data.
Signed-off-by: Ferruh Yigit <ferruh.yigit at intel.com>
---
kernel/linux/kni/kni_net.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/linux/kni/kni_net.c b/kernel/linux/kni/kni_net.c
index ad8365877..84341ac92 100644
--- a/kernel/linux/kni/kni_net.c
+++ b/kernel/linux/kni/kni_net.c
@@ -435,7 +435,7 @@ kni_net_rx_lo_fifo(struct kni_dev *kni)
/* Copy mbufs */
for (i = 0; i < num; i++) {
kva = pa2kva(kni->pa[i]);
- len = kva->pkt_len;
+ len = kva->data_len;
data_kva = kva2data_kva(kva);
kni->va[i] = pa2va(kni->pa[i], kva);
--
2.21.0
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