From a16de7a7cff14e133e01f5605f4600c67de5d91f Mon Sep 17 00:00:00 2001
From: Sebastian Hahn <sebastian@torproject.org>
Date: Tue, 18 Apr 2017 13:43:55 +0200
Subject: consdiff: Reject ranges with non-numeric chars

Fixes bug #21964
---
 src/or/consdiff.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/or/consdiff.c')

diff --git a/src/or/consdiff.c b/src/or/consdiff.c
index d2a2af1b5f..7e3d6749f6 100644
--- a/src/or/consdiff.c
+++ b/src/or/consdiff.c
@@ -757,6 +757,9 @@ get_linenum(const char **s, int *num_out)
 {
   int ok;
   char *next;
+  if (!TOR_ISDIGIT(**s)) {
+    return -1;
+  }
   *num_out = (int) tor_parse_long(*s, 10, 0, INT32_MAX, &ok, &next);
   if (ok && next) {
     *s = next;
-- 
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