bugGnash - The GNU Flash player - Bugs: bug #20440, Invalid read while parsing...

 
 

bug #20440: Invalid read while parsing video_stream_def

Submitted by:  Sandro Santilli <strk>
Submitted on:  Tue 10 Jul 2007 10:56:19 PM UTC  
 
Category: videoSeverity: 6 - Security
Release: NoneStatus: Fixed
Privacy: PublicAssigned to: Tomas Groth <tgc>
Open/Closed: Closed

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Tue 24 Jul 2007 11:36:20 AM UTC, comment #3:

Still there (but the gst segfault was fixed)

Sandro Santilli <strk>
Project Member
Tue 24 Jul 2007 11:09:49 AM UTC, comment #2:

This should be fixed now.

Tomas Groth <tgc>In charge of this item.
Wed 11 Jul 2007 09:34:49 PM UTC, comment #1:

This happens inside ffmpeg, maybe it is not a gnash error but an ffmpeg error. Just a thought... I haven't had time to look into it.

Tomas Groth <tgc>In charge of this item.
Tue 10 Jul 2007 10:56:19 PM UTC, original submission:

When runnign with a gst buil this results in a segfault.
With 'ffmpeg' only valgrind reports the problem, but not segfault happens. Input movie is testsuite/misc-ming.all/Video-EmbedSquareTest.swf.
Report is:

==3192== Invalid read of size 4
==3192== at 0x8354909: h263_decode_block (bitstream.h:409)
==3192== Address 0x50BE6D6 is 662 bytes inside a block of size 665 alloc'd
==3192== at 0x401CD67: operator new[](unsigned) (vg_replace_malloc.c:195)
==3192== by 0x81DBC11: gnash::video_stream_definition::read(gnash::stream, gnash::SWF::tag_type, gnash::movie_definition) (video_stream_def.cpp:75)
==3192== by 0x8173BA9: gnash::SWF::tag_loaders::video_loader(gnash::stream, gnash::SWF::tag_type, gnash::movie_definition) (tag_loaders.cpp:1430)
==3192== by 0x81214F1: gnash::movie_def_impl::read_all_swf() (movie_def_impl.cpp:918)
==3192== by 0x472883C: (within /usr/lib/libboost_thread-gcc-mt-1_33_1.so.1.33.1)
==3192== by 0x4731340: start_thread (in /lib/tls/i686/cmov/libpthread-2.3.6.so)
==3192== by 0x4A0B4ED: clone (in /lib/tls/i686/cmov/libc-2.3.6.so)

Sandro Santilli <strk>
Project Member

 

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  • -unavailable- added by tgc (Posted a comment)
  • -unavailable- added by strk (Submitted the item)
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    Follow 5 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Tue 24 Jul 2007 11:12:37 PM UTCstrkStatusReady For Test=>Fixed
      Open/ClosedOpen=>Closed
    Tue 24 Jul 2007 10:50:12 PM UTCtgcStatusIn Progress=>Ready For Test
    Tue 24 Jul 2007 11:36:20 AM UTCstrkStatusReady For Test=>In Progress
    Tue 24 Jul 2007 11:09:49 AM UTCtgcStatusNone=>Ready For Test

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