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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Victor Toso <me@victortoso.com>
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Date: Fri, 6 Apr 2018 09:59:44 +0200
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Subject: [PATCH] channel-usbredir: Fix crash on channel-up
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By adding a guard to not handle channel-up on SpiceUsbredirChannel in
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case struct usbredirhost wasn't initialized yet. Same guard is in
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place for the generic usbredir_handle_msg() function to avoid handling
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Server's message while Client's initialization is not done.
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As mentioned in commit 291f3e4419e6, this isn't a problem for
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graphical clients as some initialization is done to present the
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shareable usb devices to user.
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Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1399838
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Signed-off-by: Victor Toso <victortoso@redhat.com>
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Acked-by: Christophe Fergeau <cfergeau@redhat.com>
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---
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src/channel-usbredir.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/src/channel-usbredir.c b/src/channel-usbredir.c
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index 1f791bc..306bdd5 100644
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--- a/src/channel-usbredir.c
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+++ b/src/channel-usbredir.c
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@@ -817,6 +817,7 @@ static void spice_usbredir_channel_up(SpiceChannel *c)
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SpiceUsbredirChannel *channel = SPICE_USBREDIR_CHANNEL(c);
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SpiceUsbredirChannelPrivate *priv = channel->priv;
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+ g_return_if_fail(priv->host != NULL);
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/* Flush any pending writes */
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usbredirhost_write_guest_data(priv->host);
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}
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