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gentoo/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-6836.patch

27 lines
889 B

From: Li Qiang <address@hidden>
In Vmxnet3 device emulator while processing transmit(tx) queue,
when it reaches end of packet, it calls vmxnet3_complete_packet.
In that local 'txcq_descr' object is not initialised, which could
leak host memory bytes a guest.
Reported-by: Li Qiang <address@hidden>
Signed-off-by: Prasad J Pandit <address@hidden>
---
hw/net/vmxnet3.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/hw/net/vmxnet3.c b/hw/net/vmxnet3.c
index 90f6943..92f6af9 100644
--- a/hw/net/vmxnet3.c
+++ b/hw/net/vmxnet3.c
@@ -531,6 +531,7 @@ static void vmxnet3_complete_packet(VMXNET3State *s, int qidx, uint32_t tx_ridx)
VMXNET3_RING_DUMP(VMW_RIPRN, "TXC", qidx, &s->txq_descr[qidx].comp_ring);
+ memset(&txcq_descr, 0, sizeof(txcq_descr));
txcq_descr.txdIdx = tx_ridx;
txcq_descr.gen = vmxnet3_ring_curr_gen(&s->txq_descr[qidx].comp_ring);
--
2.5.5