libubox: backport security patches

This backports some security relevant patches from libubox master. These
patches should not change the existing API and ABI so that old
applications still work like before without any recompilation.
Application can now also use more secure APIs.

The new more secure interfaces are also available, but not used.

OpenWrt master and 19.07 already have these patches by using a more
recent libubox version.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

1 files changed, 39 insertions, 0 deletions

diff --git a/package/libs/libubox/patches/0001-blobmsg_json-fix-possible-uninitialized-struct-membe.patch b/package/libs/libubox/patches/0001-blobmsg_json-fix-possible-uninitialized-struct-membe.patch
new file mode 100644
index 0000000000..bb0138f2d4
--- /dev/null
+++ b/package/libs/libubox/patches/0001-blobmsg_json-fix-possible-uninitialized-struct-membe.patch
@@ -0,0 +1,39 @@
+From 2acfe84e4c871fb994c38c9f2508eb9ebd296b74 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Petr=20=C5=A0tetiar?= <ynezz@true.cz>
+Date: Tue, 19 Nov 2019 17:34:25 +0100
+Subject: blobmsg_json: fix possible uninitialized struct member
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+clang-10 analyzer reports following:
+
+ blobmsg_json.c:285:2: warning: The expression is an uninitialized value. The computed value will also be garbage
+         s->indent_level++;
+         ^~~~~~~~~~~~~~~~~
+
+Signed-off-by: Petr Štetiar <ynezz@true.cz>
+---
+ blobmsg_json.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/blobmsg_json.c
++++ b/blobmsg_json.c
+@@ -316,7 +316,7 @@ static void setup_strbuf(struct strbuf *
+ 
+ char *blobmsg_format_json_with_cb(struct blob_attr *attr, bool list, blobmsg_json_format_t cb, void *priv, int indent)
+ {
+-	struct strbuf s;
++	struct strbuf s = {0};
+ 	bool array;
+ 	char *ret;
+ 
+@@ -350,7 +350,7 @@ char *blobmsg_format_json_with_cb(struct
+ 
+ char *blobmsg_format_json_value_with_cb(struct blob_attr *attr, blobmsg_json_format_t cb, void *priv, int indent)
+ {
+-	struct strbuf s;
++	struct strbuf s = {0};
+ 	char *ret;
+ 
+ 	setup_strbuf(&s, attr, cb, priv, indent);