From: Li Qiang <liqiang...@360.cn>
When network transport abstraction layer initialises pkt, the maximum
fragmentation count is not checked. This could lead to an integer
overflow causing a NULL pointer dereference. Replace g_malloc() with
g_new() to catch the multiplication overflow.
Reported-by: Li Qiang <liqiang...@360.cn>
Signed-off-by: Prasad J Pandit <p...@fedoraproject.org>
Acked-by: Dmitry Fleytman <dmi...@daynix.com>
Signed-off-by: Jason Wang <jasow...@redhat.com>
---
hw/net/net_tx_pkt.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/hw/net/net_tx_pkt.c b/hw/net/net_tx_pkt.c
index 53dfaa2..20b2549 100644
--- a/hw/net/net_tx_pkt.c
+++ b/hw/net/net_tx_pkt.c
@@ -65,10 +65,9 @@ void net_tx_pkt_init(struct NetTxPkt **pkt, PCIDevice
*pci_dev,
p->pci_dev = pci_dev;
- p->vec = g_malloc((sizeof *p->vec) *
- (max_frags + NET_TX_PKT_PL_START_FRAG));
+ p->vec = g_new(struct iovec, max_frags + NET_TX_PKT_PL_START_FRAG);
- p->raw = g_malloc((sizeof *p->raw) * max_frags);
+ p->raw = g_new(struct iovec, max_frags);
p->max_payload_frags = max_frags;
p->max_raw_frags = max_frags;
--
2.7.4
