31 lines
1.1 KiB
Diff
31 lines
1.1 KiB
Diff
From: Li Qiang <liqiang6-s@360.cn>
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Date: Thu, 11 Aug 2016 00:42:20 +0530
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Subject: [PATCH] net: vmxnet: initialise local tx descriptor
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In Vmxnet3 device emulator while processing transmit(tx) queue,
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when it reaches end of packet, it calls vmxnet3_complete_packet.
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In that local 'txcq_descr' object is not initialised, which could
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leak host memory bytes a guest.
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Reported-by: Li Qiang <liqiang6-s@360.cn>
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Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
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Reviewed-by: Dmitry Fleytman <dmitry@daynix.com>
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Signed-off-by: Jason Wang <jasowang@redhat.com>
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(cherry picked from commit fdda170e50b8af062cf5741e12c4fb5e57a2eacf)
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---
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hw/net/vmxnet3.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/hw/net/vmxnet3.c b/hw/net/vmxnet3.c
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index a6ce16e..360290d 100644
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--- a/hw/net/vmxnet3.c
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+++ b/hw/net/vmxnet3.c
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@@ -529,6 +529,7 @@ static void vmxnet3_complete_packet(VMXNET3State *s, int qidx, uint32_t tx_ridx)
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VMXNET3_RING_DUMP(VMW_RIPRN, "TXC", qidx, &s->txq_descr[qidx].comp_ring);
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+ memset(&txcq_descr, 0, sizeof(txcq_descr));
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txcq_descr.txdIdx = tx_ridx;
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txcq_descr.gen = vmxnet3_ring_curr_gen(&s->txq_descr[qidx].comp_ring);
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