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<p class=MsoNormal><span style='color:#1F497D'>Resubmit patch </span>redone in
"unified output format" (diff -u) instead of "context output
format" (diff -c)<span style='color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
asterisk-speech-rec-bounces@lists.digium.com
[mailto:asterisk-speech-rec-bounces@lists.digium.com] <b>On Behalf Of </b>Raymond
Menard<br>
<b>Sent:</b> February 22, 2010 2:56 PM<br>
<b>To:</b> asterisk-speech-rec@lists.digium.com<br>
<b>Subject:</b> [asterisk-speech-rec] Double free failure in handle_speechrecognize
function of res_agi.c<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Problem found in Asterisk 1.6.1.12 and up<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>In the handle_speechrecognize function, if speech frames
stop coming in (e.g. because of silence suppression), the previously received
frame is freed twice because the fr field is not cleared after the first free.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Asterisk blows up in GLIBC with double free message.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Attached patch done with 1.6.1.16<o:p></o:p></p>
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