From: Jouni Malinen <j@w1.fi>
Date: Sat, 9 Feb 2019 23:33:42 +0000 (+0200)
Subject: JSON: Fix parsing of a number from the end of the buffer
X-Git-Tag: hostap_2_8~388
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0dedcb3154fad12c1ee48bb4102dfea2c11de6d9;p=thirdparty%2Fhostap.git

JSON: Fix parsing of a number from the end of the buffer

Avoid reading one octet past the end of the buffer when parsing a number
that is at the very end of the buffer.

Signed-off-by: Jouni Malinen <j@w1.fi>
---

diff --git a/src/utils/json.c b/src/utils/json.c
index b9130d3a6..c6ada0548 100644
--- a/src/utils/json.c
+++ b/src/utils/json.c
@@ -165,6 +165,8 @@ static int json_parse_number(const char **json_pos, const char *end,
 			break;
 		}
 	}
+	if (pos == end)
+		pos--;
 	if (pos < *json_pos)
 		return -1;
 	len = pos - *json_pos + 1;