commit 721b96ef902112c6d41db119ccc3129156714628
author Glenn Randers-Pehrson <glennrp at users.sourceforge.net> Mon Sep 18 14:23:41 2017 -0500
committer Glenn Randers-Pehrson <glennrp at users.sourceforge.net> Mon Sep 18 14:23:41 2017 -0500
tree 78b5fc9013ba63a383e538543192f19e11d35b61
parent 562a68513e1bc14c1d181a58dd305bb354780709

[libpng16] zero out memory allocated by png_inflate

pngrutil.c

diff --git a/pngrutil.c b/pngrutil.c
index 9dc8825..95e2b81 100644
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -670,6 +670,10 @@
                    (terminate != 0);
                png_bytep text = png_voidcast(png_bytep, png_malloc_base(png_ptr,
                    buffer_size));
+               /* attempt to stop an oss-fuzz "use of uninitialized value"
+                * in png_set_text_2()
+                */
+               memset(text, 0, buffer_size);
 
                if (text != NULL)
                {