From: Daniel Golle <daniel@makrotopia.org>
Date: Sun, 10 Jun 2018 17:03:00 +0000 (+0200)
Subject: don't ever set pointer outside of buffer
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=46eec66b190470254fc01973f208dc056bcb9780;p=project%2Fucert.git

don't ever set pointer outside of buffer

even if it's not going to be used.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This work was sponsored by WIO (wiowireless.com)
---

diff --git a/ucert.c b/ucert.c
index 686589f..6cdc220 100644
--- a/ucert.c
+++ b/ucert.c
@@ -172,9 +172,8 @@ static int cert_load(const char *certfile, struct list_head *chain) {
 
 		list_add_tail(&cobj->list, chain);
 		ret += pret;
-		bufpt = blob_next(bufpt);
 	/* repeat parsing while there is still enough remaining data in buffer */
-	} while(len > pos + sizeof(struct blob_attr));
+	} while(len > pos + sizeof(struct blob_attr) && (bufpt = blob_next(bufpt)));
 
 	return (ret <= 0);
 }