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32 lines
1.1 KiB
32 lines
1.1 KiB
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 |
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From: Frediano Ziglio <fziglio@redhat.com> |
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Date: Fri, 6 Oct 2017 09:38:31 +0100 |
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Subject: [spice-server] inputs-channel: Check message size handling migration |
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data |
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Prevent possible buffer reading overflow. |
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Note that message pointer must be valid and data are checked |
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value by value so even on overflow you just get an error. |
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Signed-off-by: Frediano Ziglio <fziglio@redhat.com> |
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Acked-by: Christophe Fergeau <cfergeau@redhat.com> |
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--- |
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server/inputs-channel.c | 5 +++++ |
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1 file changed, 5 insertions(+) |
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diff --git a/server/inputs-channel.c b/server/inputs-channel.c |
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index 8e17cc724..11a338a26 100644 |
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--- a/server/inputs-channel.c |
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+++ b/server/inputs-channel.c |
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@@ -505,6 +505,11 @@ static bool inputs_channel_handle_migrate_data(RedChannelClient *rcc, |
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SpiceMigrateDataHeader *header; |
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SpiceMigrateDataInputs *mig_data; |
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+ if (size < sizeof(SpiceMigrateDataHeader) + sizeof(SpiceMigrateDataInputs)) { |
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+ spice_warning("bad message size %u", size); |
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+ return FALSE; |
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+ } |
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+ |
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header = (SpiceMigrateDataHeader *)message; |
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mig_data = (SpiceMigrateDataInputs *)(header + 1); |
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