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Description
Hi, i found a null pointer dereference bug in Freeware Advanced Audio Decoder 2 (FAAD2) 2.8.8. It crashed in function ifilter_bank.the details are below(ASAN):
./faad faad_res/008-null-point-filtbank_275 -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/008-null-point-filtbank_275 file info:
ADTS, 0.043 sec, 74 kbps, 48000 Hz
---------------------
| Config: 2 Ch |
---------------------
| Ch | Position |
---------------------
| 00 | Left front |
| 01 | Right front |
---------------------
ASAN:SIGSEGV faad_res/008-null-point-filtbank_275.
=================================================================
==7076==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7f5946ec66b1 bp 0x7fff7f757780 sp 0x7fff7f755690 T0)
#0 0x7f5946ec66b0 in ifilter_bank /root/faad2_asan/libfaad/filtbank.c:275
#1 0x7f5946f0119d in reconstruct_channel_pair /root/faad2_asan/libfaad/specrec.c:1258
#2 0x7f5946f07823 in channel_pair_element /root/faad2_asan/libfaad/syntax.c:759
#3 0x7f5946f05cbf in decode_cpe /root/faad2_asan/libfaad/syntax.c:402
#4 0x7f5946f06398 in raw_data_block /root/faad2_asan/libfaad/syntax.c:448
#5 0x7f5946ec09c3 in aac_frame_decode /root/faad2_asan/libfaad/decoder.c:990
#6 0x7f5946ec0566 in NeAACDecDecode /root/faad2_asan/libfaad/decoder.c:821
#7 0x40f8ae in decodeAACfile /root/faad2_asan/frontend/main.c:679
#8 0x411dd4 in faad_main /root/faad2_asan/frontend/main.c:1323
#9 0x411fe5 in main /root/faad2_asan/frontend/main.c:1366
#10 0x7f5946af882f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
#11 0x401aa8 in _start (/usr/local/faad-asan/bin/faad+0x401aa8)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /root/faad2_asan/libfaad/filtbank.c:275 ifilter_bank
==7076==ABORTING
POC FILE:https://github.com/fantasy7082/image_test/blob/master/008-null-point-filtbank_275
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