gd/gd-png-loop-CVE-2007-2756.patch

16 lines
494 B
Diff

--- gd_png.c 1 Apr 2007 20:41:01 -0000 1.21.2.1
+++ gd_png.c 16 May 2007 19:06:11 -0000
@@ -81,7 +81,11 @@ gdPngErrorHandler (png_structp png_ptr,
static void
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