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Copied from Fedora.
http://pkgs.fedoraproject.org/cgit/libwmf.git/tree/libwmf-0.2.8.4-CVE-2007-2756.patch
--- libwmf-0.2.8.4/src/extra/gd/gd_png.c 1 Apr 2007 20:41:01 -0000 1.21.2.1
+++ libwmf-0.2.8.4/src/extra/gd/gd_png.c 16 May 2007 19:06:11 -0000
@@ -78,8 +78,11 @@
gdPngReadData (png_structp png_ptr,
png_bytep data, png_size_t length)
{
- gdGetBuf (data, length, (gdIOCtx *)
- png_get_io_ptr (png_ptr));
+ int check;
+ check = gdGetBuf (data, length, (gdIOCtx *) png_get_io_ptr (png_ptr));
+ if (check != length) {
+ png_error(png_ptr, "Read Error: truncated data");
+ }
}
static void
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