From: Simon Tatham <anakin@pobox.com>
Date: Thu, 11 Jul 2013 17:24:01 +0000 (+0000)
Subject: Add another missing bounds check in the SSH-1 private key loader.
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;ds=sidebyside;h=9ef87d317862fb5f814d0d6ea957b40b3c7c9f7c;p=PuTTY_svn.git

Add another missing bounds check in the SSH-1 private key loader.


git-svn-id: http://svn.tartarus.org/sgt/putty@9904 cda61777-01e9-0310-a592-d414129be87e
---

diff --git a/sshpubk.c b/sshpubk.c
index bd3c5e47..b860040d 100644
--- a/sshpubk.c
+++ b/sshpubk.c
@@ -74,7 +74,7 @@ static int loadrsakey_main(FILE * fp, struct RSAKey *key, int pub_only,
     /* Next, the comment field. */
     j = GET_32BIT(buf + i);
     i += 4;
-    if (len - i < j)
+    if (j < 0 || len - i < j)
 	goto end;
     comment = snewn(j + 1, char);
     if (comment) {