[asterisk-bugs] [Asterisk 0017474]: [patch] Crash in dsp.c when entering digits from SpeechBackground

[Asterisk Bug Tracker]

The following issue has been RESOLVED. 
====================================================================== 
https://issues.asterisk.org/view.php?id=17474 
====================================================================== 
Reported By:                kenner
Assigned To:                tilghman
====================================================================== 
Project:                    Asterisk
Issue ID:                   17474
Category:                   Core/General
Reproducibility:            always
Severity:                   crash
Priority:                   normal
Status:                     resolved
Asterisk Version:           SVN 
JIRA:                        
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): 1.6.2 
SVN Revision (number only!): 268453 
Request Review:              
Resolution:                 fixed
Fixed in Version:           
====================================================================== 
Date Submitted:             2010-06-05 11:36 CDT
Last Modified:              2010-06-05 12:55 CDT
====================================================================== 
Summary:                    [patch] Crash in dsp.c when entering digits from
SpeechBackground
Description: 
The field current_len is set to zero and decremented, but never incremented
in dsp.c.  But its used as the operand of memmove, so the second time the
code in question is executed, memmove is passed an operand of -1, which
causes a crash.  I have a patch, which fixes the problem, but I don't
understand the code enough to be completely confident that it's correct.

======================================================================
Relationships       ID      Summary
----------------------------------------------------------------------
duplicate of        0017371 [patch] [regression] DAHDI analog FXS p...
====================================================================== 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2010-06-05 12:55 svnbot         Status                   new => assigned     
2010-06-05 12:55 svnbot         Assigned To               => tilghman        
2010-06-05 12:55 svnbot         Status                   assigned => resolved
2010-06-05 12:55 svnbot         Resolution               open => fixed       
======================================================================