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Summary:ASTERISK-04959: [patch] ast_var_assign does not initialize ast_var_t data structure
Reporter:Di-Shi Sun (homesick)Labels:
Date Opened:2005-09-01 10:43:43Date Closed:2008-01-15 15:46:47.000-0600
Priority:CriticalRegression?No
Status:Closed/CompleteComponents:Core/General
Versions:Frequency of
Occurrence
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Issues:
Environment:Attachments:( 0) ast_var_assign.patch
Description:ast_var_assign function in asterisk/charvars.c does not initialize the ast_var_t data structure it creates. This fucntion mallocs a memory block for a ast_var_t data structure, and does not initizlized it (in fact, does not initizlize the "next" pointer). It causes that any function reading the "next" pointer uses this pointer as non-NULL, and carsh. It did occur with AST_LIST_INSERT_TAIL.

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Disclaimer signed by TransNexus, Inc. 1/27/05
Comments:By: Kevin P. Fleming (kpfleming) 2005-09-01 18:08:06

Committed to CVS HEAD, thanks!
By: Digium Subversion (svnbot) 2008-01-15 15:46:47.000-0600

Repository: asterisk
Revision: 6494

U   trunk/chanvars.c

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r6494 | kpfleming | 2008-01-15 15:46:47 -0600 (Tue, 15 Jan 2008) | 2 lines

ensure variable structure is initialized before use (issue ASTERISK-4959)

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http://svn.digium.com/view/asterisk?view=rev&revision=6494