From: Eric Andersen <andersen@codepoet.org>
Date: Sat, 19 Apr 2003 23:15:06 +0000 (-0000)
Subject: Patch from David Updegraff to avoid corrupting memory while parsing the
X-Git-Tag: 1_00_pre1~114
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=2894266f12e699570d223d9f19ca79979196060b;p=oweals%2Fbusybox.git

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.
---

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;
 }