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Invalid memory address dereference in sbr_process_channel (in libfaad/sbr_dec.c:375) #32

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fantasy7082 opened this Issue Dec 17, 2018 · 0 comments

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fantasy7082 commented Dec 17, 2018

Hi, i found a issue in Freeware Advanced Audio Decoder 2 (FAAD2) 2.8.8. It crashed in function sbr_process_channel .the details are below(ASAN):

./faad faad_res/012-invalid-def-sbr_dec_375 -o out.wav
 *********** Ahead Software MPEG-4 AAC Decoder V2.8.8 ******************

 Build: Dec 13 2018
 Copyright 2002-2004: Ahead Software AG
 http://www.audiocoding.com
 bug tracking: https://sourceforge.net/p/faac/bugs/
 Floating point version

 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License.

 **************************************************************************

faad_res/012-invalid-def-sbr_dec_375 file info:
ADTS, 0.043 sec, 37 kbps, 48000 Hz

  ---------------------
 | Config: 15 Ch       |
  ---------------------
 | Ch |    Position    |
  ---------------------
 | 00 | Left front     |
 | 01 | Right front    |
 | 02 | Unknown        |
 | 03 | Unknown        |
 | 04 | Unknown        |
 | 05 | Unknown        |
 | 06 | Unknown        |
 | 07 | Unknown        |
 | 08 | Unknown        |
 | 09 | Unknown        |
 | 10 | Unknown        |
 | 11 | Unknown        |
 | 12 | Unknown        |
 | 13 | Unknown        |
 | 14 | Unknown        |
  ---------------------

ASAN:SIGSEGVfaad_res/012-invalid-def-sbr_dec_375.
=================================================================
==7096==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000009 (pc 0x7f9edd65e76f bp 0x7ffff6126140 sp 0x7ffff6126100 T0)
    #0 0x7f9edd65e76e in sbr_process_channel /root/faad2_asan/libfaad/sbr_dec.c:375
    #1 0x7f9edd660049 in sbrDecodeSingleFrame /root/faad2_asan/libfaad/sbr_dec.c:562
    #2 0x7f9edd6089a1 in reconstruct_single_channel /root/faad2_asan/libfaad/specrec.c:1067
    #3 0x7f9edd610e28 in single_lfe_channel_element /root/faad2_asan/libfaad/syntax.c:631
    #4 0x7f9edd60f354 in decode_sce_lfe /root/faad2_asan/libfaad/syntax.c:351
    #5 0x7f9edd6102da in raw_data_block /root/faad2_asan/libfaad/syntax.c:441
    #6 0x7f9edd5ca9c3 in aac_frame_decode /root/faad2_asan/libfaad/decoder.c:990
    #7 0x7f9edd5ca566 in NeAACDecDecode /root/faad2_asan/libfaad/decoder.c:821
    #8 0x40f8ae in decodeAACfile /root/faad2_asan/frontend/main.c:679
    #9 0x411dd4 in faad_main /root/faad2_asan/frontend/main.c:1323
    #10 0x411fe5 in main /root/faad2_asan/frontend/main.c:1366
    #11 0x7f9edd20282f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
    #12 0x401aa8 in _start (/usr/local/faad-asan/bin/faad+0x401aa8)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /root/faad2_asan/libfaad/sbr_dec.c:375 sbr_process_channel
==7096==ABORTING

POC FILE:https://github.com/fantasy7082/image_test/blob/master/012-invalid-def-sbr_dec_375

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