diff --git a/libtiff-CVE-2013-4243.patch b/libtiff-CVE-2013-4243.patch
new file mode 100644
index 0000000..c365d99
--- /dev/null
+++ b/libtiff-CVE-2013-4243.patch
@@ -0,0 +1,41 @@
+diff --git a/tools/gif2tiff.c b/tools/gif2tiff.c
+index 2731273..ca824e2 100644
+--- a/tools/gif2tiff.c
++++ b/tools/gif2tiff.c
+@@ -280,6 +280,10 @@ readgifimage(char* mode)
+         fprintf(stderr, "no colormap present for image\n");
+         return (0);
+     }
++    if (width == 0 || height == 0) {
++        fprintf(stderr, "Invalid value of width or height\n");
++        return(0);
++    }
+     if ((raster = (unsigned char*) _TIFFmalloc(width*height+EXTRAFUDGE)) == NULL) {
+         fprintf(stderr, "not enough memory for image\n");
+         return (0);
+@@ -406,7 +410,11 @@ process(register int code, unsigned char** fill)
+             fprintf(stderr, "bad input: code=%d is larger than clear=%d\n",code, clear);
+             return 0;
+         }
+-	*(*fill)++ = suffix[code];
++        if (*fill >= raster + width*height) {
++            fprintf(stderr, "raster full before eoi code\n");
++            return 0;
++        }
++        *(*fill)++ = suffix[code];
+ 	firstchar = oldcode = code;
+ 	return 1;
+     }
+@@ -436,7 +444,11 @@ process(register int code, unsigned char** fill)
+     }
+     oldcode = incode;
+     do {
+-	*(*fill)++ = *--stackp;
++        if (*fill >= raster + width*height) {
++            fprintf(stderr, "raster full before eoi code\n");
++            return 0;
++        }
++        *(*fill)++ = *--stackp;
+     } while (stackp > stack);
+     return 1;
+ }
diff --git a/libtiff.spec b/libtiff.spec
index 9f5a647..5cb14ff 100644
--- a/libtiff.spec
+++ b/libtiff.spec
@@ -1,7 +1,7 @@
 Summary: Library of functions for manipulating TIFF format image files
 Name: libtiff
 Version: 4.0.3
-Release: 14%{?dist}
+Release: 15%{?dist}
 
 License: libtiff
 Group: System Environment/Libraries
@@ -21,6 +21,7 @@ Patch8: libtiff-CVE-2013-4231.patch
 Patch9: libtiff-CVE-2013-4232.patch
 Patch10: libtiff-CVE-2013-4244.patch
 Patch11: libtiff-make-check.patch
+Patch12: libtiff-CVE-2013-4243.patch
 
 BuildRequires: zlib-devel libjpeg-devel jbigkit-devel
 BuildRequires: libtool automake autoconf pkgconfig
@@ -83,6 +84,7 @@ image files using the libtiff library.
 %patch9 -p1
 %patch10 -p1
 %patch11 -p1
+%patch12 -p1
 
 # Use build system's libtool.m4, not the one in the package.
 rm -f libtool.m4
@@ -188,6 +190,9 @@ find html -name 'Makefile*' | xargs rm
 %{_mandir}/man1/*
 
 %changelog
+* Wed May 21 2014 Petr Hracek <phracek@redhat.com> - 4.0.3-15
+- Add upstream patches for CVE-2013-4243 (#996832)
+
 * Thu Dec 19 2013 Petr Hracek <phracek@redhat.com> - 4.0.3-14
 - Fix: #1044609 Can't install both architectures