Created attachment 1337015 [details]
poc_file

Version-Release number of selected component (if applicable):
SoX v14.4.2

How reproducible:

./sox 03-abort out.wav
sox: /root/fuzzing/sox/src/formats.c:227: sox_append_comment: Assertion `comment' failed.
Aborted (core dumped)


The gdb debugging information is listed below:

gdb ./sox /tmp/core.1507694923 
GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.5) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./sox...done.
[New LWP 15505]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `./sox 03-abort out.wav'.
Program terminated with signal SIGABRT, Aborted.
#0  0x00007f1580380428 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54
54	../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
(gdb) bt
#0  0x00007f1580380428 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54
#1  0x00007f158038202a in __GI_abort () at abort.c:89
#2  0x00007f1580378bd7 in __assert_fail_base (fmt=<optimized out>, assertion=assertion@entry=0x676044 "comment", file=file@entry=0x682f00 "/root/fuzzing/sox/src/formats.c", line=line@entry=227, 
    function=function@entry=0x683a90 <__PRETTY_FUNCTION__.6255> "sox_append_comment") at assert.c:92
#3  0x00007f1580378c82 in __GI___assert_fail (assertion=assertion@entry=0x676044 "comment", file=file@entry=0x682f00 "/root/fuzzing/sox/src/formats.c", line=line@entry=227, function=function@entry=0x683a90 <__PRETTY_FUNCTION__.6255> "sox_append_comment")
    at assert.c:101
#4  0x000000000056d2b5 in sox_append_comment (comments=comments@entry=0x21c9560, comment=0x0) at /root/fuzzing/sox/src/formats.c:227
#5  0x00000000005f471b in decoder_metadata_callback (flac=<optimized out>, metadata=0x7ffcd5007a80, client_data=0x21c9510) at /root/fuzzing/sox/src/flac.c:133
#6  0x00007f1580c29e38 in read_metadata_ (decoder=decoder@entry=0x21caac0) at stream_decoder.c:1511
#7  0x00007f1580c30560 in FLAC__stream_decoder_process_until_end_of_metadata (decoder=0x21caac0) at stream_decoder.c:1054
#8  0x00000000005f3809 in start_read (ft=0x21c9510) at /root/fuzzing/sox/src/flac.c:239
#9  0x00000000005716b5 in open_read (path=<optimized out>, buffer=buffer@entry=0x0, buffer_size=buffer_size@entry=0, signal=signal@entry=0x21c9200, encoding=encoding@entry=0x21c9220, filetype=<optimized out>) at /root/fuzzing/sox/src/formats.c:545
#10 0x0000000000572d7a in sox_open_read (path=<optimized out>, signal=signal@entry=0x21c9200, encoding=encoding@entry=0x21c9220, filetype=<optimized out>) at /root/fuzzing/sox/src/formats.c:585
#11 0x000000000040bbf7 in main (argc=3, argv=0x7ffcd5007f68) at /root/fuzzing/sox/src/sox.c:2945


Additional info:
Name:liuzhu