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audio: release capture buffers 

AUD_add_capture() allocates two buffers which are never released.
Add the missing calls to AUD_del_capture().

Impact: Allows vnc clients to exhaust host memory by repeatedly
starting and stopping audio capture.

Fixes: CVE-2017-8309
Cc: P J P <ppandit@redhat.com>
Cc: Huawei PSIRT <PSIRT@huawei.com>
Reported-by: "Jiangxin (hunter, SCC)" <jiangxin1@huawei.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Prasad J Pandit <pjp@fedoraproject.org>
Message-id: 20170428075612.9997-1-kraxel@redhat.com
(cherry picked from commit 3268a845f4)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
This commit is contained in:
Gerd Hoffmann 2017-04-28 09:56:12 +02:00 committed by Michael Roth
parent 40a7d47c5a
commit 3c69132635
1 changed files with 2 additions and 0 deletions
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2
audio/audio.c
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@ -2028,6 +2028,8 @@ void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque)
sw = sw1;
}
QLIST_REMOVE (cap, entries);
g_free (cap->hw.mix_buf);
g_free (cap->buf);
g_free (cap);
}
return;