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[pve-qemu-kvm.git] / debian / patches / extra / 0005-net-vmxnet-initialise-local-tx-descriptor.patch
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1From 4fa993ee1f127eee2862f1779565aea0b760647a Mon Sep 17 00:00:00 2001
2From: Li Qiang <liqiang6-s@360.cn>
3Date: Thu, 11 Aug 2016 00:42:20 +0530
4Subject: [PATCH 5/5] net: vmxnet: initialise local tx descriptor
5
6In Vmxnet3 device emulator while processing transmit(tx) queue,
7when it reaches end of packet, it calls vmxnet3_complete_packet.
8In that local 'txcq_descr' object is not initialised, which could
9leak host memory bytes a guest.
10
11Reported-by: Li Qiang <liqiang6-s@360.cn>
12Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
13---
14 hw/net/vmxnet3.c | 1 +
15 1 file changed, 1 insertion(+)
16
17diff --git a/hw/net/vmxnet3.c b/hw/net/vmxnet3.c
18index a6ce16e..360290d 100644
19--- a/hw/net/vmxnet3.c
20+++ b/hw/net/vmxnet3.c
21@@ -529,6 +529,7 @@ static void vmxnet3_complete_packet(VMXNET3State *s, int qidx, uint32_t tx_ridx)
22
23 VMXNET3_RING_DUMP(VMW_RIPRN, "TXC", qidx, &s->txq_descr[qidx].comp_ring);
24
25+ memset(&txcq_descr, 0, sizeof(txcq_descr));
26 txcq_descr.txdIdx = tx_ridx;
27 txcq_descr.gen = vmxnet3_ring_curr_gen(&s->txq_descr[qidx].comp_ring);
28
29--
302.1.4
31