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[master] Avoid a possible NULL dereference in debug build,

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in png_set_text_2() (bug introduced in libpng-0.95, discovered by Evan Rouault)
This commit is contained in:
Glenn Randers-Pehrson 2009-07-27 22:27:30 -05:00
parent 8de509a837
commit a4d439b975
4 changed files with 11 additions and 6 deletions
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6
ANNOUNCE
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@ -1,5 +1,5 @@
Libpng 1.2.39beta02 - July 25, 2009
Libpng 1.2.39beta02 - July 28, 2009
This is not intended to be a public release. It will be replaced
within a few weeks by a public version or by another test version.
@ -46,7 +46,9 @@ Changes since the last public release (1.2.38):
version 1.2.39beta01 [July 25, 2009]
Added a prototype for png_64bit_product() in png.c
version 1.2.39beta02 [July 25, 2009]
version 1.2.39beta02 [July 28, 2009]
Avoid a possible NULL dereference in debug build, in png_set_text_2().
(bug introduced in libpng-0.95, discovered by Evan Rouault)
Send comments/corrections/commendations to png-mng-implement at lists.sf.net

4
CHANGES
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@ -2435,7 +2435,9 @@ version 1.0.47 and 1.2.38 [July 16, 2009]
version 1.2.39beta01 [July 25, 2009]
Added a prototype for png_64bit_product() in png.c
version 1.2.39beta02 [July 25, 2009]
version 1.2.39beta02 [July 28, 2009]
Avoid a possible NULL dereference in debug build, in png_set_text_2().
(bug introduced in libpng-0.95, discovered by Evan Rouault)
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit

2
pngrutil.c
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@ -1,7 +1,7 @@
/* pngrutil.c - utilities to read a PNG file
*
* Last changed in libpng 1.2.38 [July 25, 2009]
* Last changed in libpng 1.2.38 [June 16, 2009]
* Copyright (c) 1998-2009 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.)

5
pngset.c
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@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct
*
* Last changed in libpng 1.2.38 [July 16, 2009]
* Last changed in libpng 1.2.39 [July 28, 2009]
* Copyright (c) 1998-2009 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.)
@ -708,7 +708,8 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
{
int i;
png_debug1(1, "in %s storage function", (png_ptr->chunk_name[0] == '\0' ?
png_debug1(1, "in %s storage function", ((png_ptr == NULL ||
png_ptr->chunk_name[0] == '\0') ?
"text" : (png_const_charp)png_ptr->chunk_name));
if (png_ptr == NULL || info_ptr == NULL || num_text == 0)