diff options
| author | tilghman <tilghman@f38db490-d61c-443f-a65b-d21fe96a405b> | 2009-08-09 07:12:51 +0000 |
|---|---|---|
| committer | tilghman <tilghman@f38db490-d61c-443f-a65b-d21fe96a405b> | 2009-08-09 07:12:51 +0000 |
| commit | d6a9df4d865c20114434d8cbb56d3d314319187c (patch) | |
| tree | 8bb5c65e9858bbef97fd2e6e0b470bb249006f03 | |
| parent | 95e89b34f56f222d595161313e9ab28f3481b17e (diff) | |
Merged revisions 211232 via svnmerge from
https://origsvn.digium.com/svn/asterisk/trunk
........
r211232 | tilghman | 2009-08-09 02:11:22 -0500 (Sun, 09 Aug 2009) | 4 lines
Check for NULL frame, before dereferencing pointer.
(closes issue #15617)
Reported by: rain
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git-svn-id: http://svn.digium.com/svn/asterisk/branches/1.6.1@211234 f38db490-d61c-443f-a65b-d21fe96a405b
| -rw-r--r-- | apps/app_stack.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/apps/app_stack.c b/apps/app_stack.c index 08a6c38c3..444aa4047 100644 --- a/apps/app_stack.c +++ b/apps/app_stack.c @@ -356,7 +356,12 @@ static int local_read(struct ast_channel *chan, const char *cmd, char *data, cha oldlist = stack_store->data; AST_LIST_LOCK(oldlist); - frame = AST_LIST_FIRST(oldlist); + if (!(frame = AST_LIST_FIRST(oldlist))) { + /* Not within a Gosub routine */ + AST_LIST_UNLOCK(oldlist); + return -1; + } + AST_LIST_TRAVERSE(&frame->varshead, variables, entries) { if (!strcmp(data, ast_var_name(variables))) { const char *tmp; |