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[master] Check for out-of-range text compression mode in png_set_text().

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Glenn Randers-Pehrson
2010-10-13 07:14:12 -05:00
parent f3eadd1737
commit c0fc0dfc45
3 changed files with 15 additions and 6 deletions
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9
pngset.c
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@@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct
*
* Last changed in libpng 1.4.1 [February 25, 2010]
* Last changed in libpng 1.4.5 [October 13, 2010]
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -690,6 +690,13 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
if (text_ptr[i].key == NULL)
continue;
if (text_ptr[i].compression < PNG_TEXT_COMPRESSION_NONE ||
text_ptr[i].compression >= PNG_TEXT_COMPRESSION_LAST)
{
png_warning(png_ptr, "text compression mode is out of range");
continue;
}
key_len = png_strlen(text_ptr[i].key);
if (text_ptr[i].compression <= 0)