From 101ffd70a7baeb426325c6450d7e34517ae59e9d Mon Sep 17 00:00:00 2001
From: Jakub Jelen <jjelen@redhat.com>
Date: Tue, 29 Oct 2019 14:49:36 +0100
Subject: [PATCH] config: Ignore empty lines to avoid OOB array access

Fixes T187

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
(cherry picked from commit 574690ae2e8a33a0f618a57e744bfccf74b0960b)
---
 src/config.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/config.c b/src/config.c
index 62279a67..a08e41b8 100644
--- a/src/config.c
+++ b/src/config.c
@@ -394,6 +394,11 @@ ssh_config_parse_line(ssh_session session,
   long l;
   int64_t ll;
 
+  /* Ignore empty lines */
+  if (line == NULL || *line == '\0') {
+    return 0;
+  }
+
   x = s = strdup(line);
   if (s == NULL) {
     ssh_set_error_oom(session);