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Bug #19941 ImageTrueColorToPalette crashes with bundled libgd with last parameter set to 0
Submitted: 2002-10-16 17:29 UTC Modified: 2002-10-16 17:35 UTC
From: mfischer@php.net Assigned:
Status: Closed Package: GD related
PHP Version: 4CVS-2002-10-16 OS: Linux
Private report: No CVE-ID: None
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 [2002-10-16 17:29 UTC] mfischer@php.net 
Calling ImageTrueColorToPalette() with the last parameter set to 0 causes a segfault:

Program received signal SIGSEGV, Segmentation fault.
0x4013b84b in free () from /lib/libc.so.6
(gdb) bt
#0  0x4013b84b in free () from /lib/libc.so.6
#1  0x4013b6d3 in free () from /lib/libc.so.6
#2  0x080824da in gdFree (ptr=0x82897c0) at /home/mfischer/isrc/cvs/php4/ext/gd/libgd/gdhelpers.c:95
#3  0x08083515 in select_colors (im=0x8290b18, cquantize=0x82930c0, desired_colors=0) at /home/mfischer/isrc/cvs/php4/ext/gd/libgd/gd_topal.c:701
#4  0x08084804 in gdImageTrueColorToPalette (im=0x8290b18, dither=0, colorsWanted=0) at /home/mfischer/isrc/cvs/php4/ext/gd/libgd/gd_topal.c:1562
#5  0x0806b073 in zif_imagetruecolortopalette (ht=3, return_value=0x829321c, this_ptr=0x0, return_value_used=0) at /home/mfischer/isrc/cvs/php4/ext/gd/gd.c:648
#6  0x081af8e3 in execute (op_array=0x828ea14) at /home/mfischer/isrc/cvs/php4/Zend/zend_execute.c:1597
#7  0x0819ee49 in zend_execute_scripts (type=8, retval=0x0, file_count=3) at /home/mfischer/isrc/cvs/php4/Zend/zend.c:839
#8  0x0816d681 in php_execute_script (primary_file=0xbffffa40) at /home/mfischer/isrc/cvs/php4/main/main.c:1542
#9  0x081b5420 in main (argc=2, argv=0xbffffac4) at /home/mfischer/isrc/cvs/php4/sapi/cli/php_cli.c:695

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 [2002-10-16 17:35 UTC] rasmus@php.net 
Fixed in CVS
 
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