#38112 [NEW]: Segmentation fault in imagecreatefromgif

[bduclaux at yahoo dot com]

From:             bduclaux at yahoo dot com
Operating system: Linux
PHP version:      5.1.4
PHP Bug Type:     GD related
Bug description:  Segmentation fault in imagecreatefromgif

Description:
------------
imagecreatefromgif segfaults when broken gif images are loaded

Reproduce code:
---------------
<?php
$im=imagecreatefromgif("http://www.compuworldfrance.com/boutique/images_produits/26HEBOITIER0010_1.gif";);
?>

Expected result:
----------------
Should not segfault !

Actual result:
--------------
The bug comes from the file php-5.1.4/ext/gd/libgd/gd_gif_in.c:394

Here is the full trace :
(gdb) bt
#0  LWZReadByte (fd=0x856c96c, flag=Variable "flag" is not available.
) at /home/sysop/php-5.1.4/ext/gd/libgd/gd_gif_in.c:394
#1  0x080ead3c in ReadImage (im=0x8569604, fd=0x856c96c, len=130,
height=130, cmap=0xbfffcd80, interlace=0)
    at /home/sysop/php-5.1.4/ext/gd/libgd/gd_gif_in.c:520
#2  0x080eb008 in php_gd_gdImageCreateFromGifCtx (fd=0x856c96c) at
/home/sysop/php-5.1.4/ext/gd/libgd/gd_gif_in.c:199
#3  0x080d25fb in _php_image_create_from (ht=Variable "ht" is not
available.
) at /home/sysop/php-5.1.4/ext/gd/gd.c:1608
#4  0x080d281b in zif_imagecreatefromgif (ht=292440,
return_value=0x4000000, return_value_ptr=0x0, this_ptr=0x0, 
    return_value_used=1) at /home/sysop/php-5.1.4/ext/gd/gd.c:1674
#5  0x0822df8c in zend_do_fcall_common_helper_SPEC
(execute_data=0xbfffd510) at
/home/sysop/php-5.1.4/Zend/zend_vm_execute.h:200
#6  0x0822d971 in execute (op_array=0x85674e4) at
/home/sysop/php-5.1.4/Zend/zend_vm_execute.h:92
#7  0x08216252 in zend_execute_scripts (type=8, retval=0x0, file_count=3)
at /home/sysop/php-5.1.4/Zend/zend.c:1109
#8  0x081e25d0 in php_execute_script (primary_file=0xbffffa10) at
/home/sysop/php-5.1.4/main/main.c:1732
#9  0x08290111 in main (argc=2, argv=0xbffffae4) at
/home/sysop/php-5.1.4/sapi/cli/php_cli.c:1092



-- 
Edit bug report at http://bugs.php.net/?id=38112&edit=1
-- 
Try a CVS snapshot (PHP 4.4): 
http://bugs.php.net/fix.php?id=38112&r=trysnapshot44
Try a CVS snapshot (PHP 5.2): 
http://bugs.php.net/fix.php?id=38112&r=trysnapshot52
Try a CVS snapshot (PHP 6.0): 
http://bugs.php.net/fix.php?id=38112&r=trysnapshot60
Fixed in CVS:                 http://bugs.php.net/fix.php?id=38112&r=fixedcvs
Fixed in release:             
http://bugs.php.net/fix.php?id=38112&r=alreadyfixed
Need backtrace:               http://bugs.php.net/fix.php?id=38112&r=needtrace
Need Reproduce Script:        http://bugs.php.net/fix.php?id=38112&r=needscript
Try newer version:            http://bugs.php.net/fix.php?id=38112&r=oldversion
Not developer issue:          http://bugs.php.net/fix.php?id=38112&r=support
Expected behavior:            http://bugs.php.net/fix.php?id=38112&r=notwrong
Not enough info:              
http://bugs.php.net/fix.php?id=38112&r=notenoughinfo
Submitted twice:              
http://bugs.php.net/fix.php?id=38112&r=submittedtwice
register_globals:             http://bugs.php.net/fix.php?id=38112&r=globals
PHP 3 support discontinued:   http://bugs.php.net/fix.php?id=38112&r=php3
Daylight Savings:             http://bugs.php.net/fix.php?id=38112&r=dst
IIS Stability:                http://bugs.php.net/fix.php?id=38112&r=isapi
Install GNU Sed:              http://bugs.php.net/fix.php?id=38112&r=gnused
Floating point limitations:   http://bugs.php.net/fix.php?id=38112&r=float
No Zend Extensions:           http://bugs.php.net/fix.php?id=38112&r=nozend
MySQL Configuration Error:    http://bugs.php.net/fix.php?id=38112&r=mysqlcfg