Patch from David Updegraff to avoid corrupting memory while parsing the

networks/iterfaces file with next_word routine.  Without this, next_word
increments one beyond the end of the string.


git-svn-id: svn://busybox.net/trunk/busybox@6797 69ca8d6d-28ef-0310-b511-8ec308f3f277

1 files changed, 5 insertions, 2 deletions

diff --git a/networking/ifupdown.c b/networking/ifupdown.c
index fedae8dd6..6c79c2004 100644
--- a/networking/ifupdown.c
+++ b/networking/ifupdown.c
@@ -630,8 +630,11 @@ static char *next_word(char **buf)
                 return(NULL);
         }
         *buf = word + length;
-        **buf = '\0';
-        (*buf)++;
+        /*DBU:[dave@cray.com] if we are already at EOL dont't increment beyond it */
+        if (**buf) {
+                **buf = '\0';
+                (*buf)++;
+        }
 
         return word;
 }