Opened 4 weeks ago

Closed 4 weeks ago

#6196 closed defect (fixed)

scpr: SIGFPE with fuzzed file

Reported by: ami_stuff Owned by:
Priority: important Component: avcodec
Version: git-master Keywords: scpr
Cc: Blocked By:
Blocking: Reproduced by developer: yes
Analyzed by developer: no

Description

(gdb) r -i browsing_fuzz.avi -f null -
Starting program: /media/sdb1/ffmpeg/ffmpeg_g -i browsing_fuzz.avi -f null -
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
ffmpeg version 3.2.git Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 5.3.0 (Ubuntu 5.3.0-3ubuntu1~14.04) 20151204
  configuration: --disable-ffprobe --disable-ffplay --disable-ffserver --enable-gpl
  libavutil      55. 47.100 / 55. 47.100
  libavcodec     57. 81.100 / 57. 81.100
  libavformat    57. 66.102 / 57. 66.102
  libavdevice    57.  2.100 / 57.  2.100
  libavfilter     6. 74.100 /  6. 74.100
  libswscale      4.  3.101 /  4.  3.101
  libswresample   2.  4.100 /  2.  4.100
  libpostproc    54.  2.100 / 54.  2.100
[avi @ 0x9a28200] Something went wrong during header parsing, tag Y[220][216]f has size 2968288127, I will ignore it and try to continue anyway.
Input #0, avi, from 'browsing_fuzz.avi':
  Duration: 00:00:54.67, start: 0.000000, bitrate: 315 kb/s
    Stream #0:0: Video: scpr (SCPR / 0x52504353), bgr0, 932x720, 15 fps, 15 tbr, 15 tbn, 15 tbc
[New Thread 0xb68c6b40 (LWP 2913)]
[New Thread 0xb60c5b40 (LWP 2914)]
[New Thread 0xb58c4b40 (LWP 2915)]
[New Thread 0xb50c3b40 (LWP 2916)]
[New Thread 0xb48c2b40 (LWP 2917)]
[New Thread 0xb40c1b40 (LWP 2918)]
[New Thread 0xb38c0b40 (LWP 2919)]
[New Thread 0xb30bfb40 (LWP 2920)]
[New Thread 0xb28beb40 (LWP 2921)]
Output #0, null, to 'pipe:':
  Metadata:
    encoder         : Lavf57.66.102
    Stream #0:0: Video: wrapped_avframe, bgr0, 932x720, q=2-31, 200 kb/s, 15 fps, 15 tbn, 15 tbc
    Metadata:
      encoder         : Lavc57.81.100 wrapped_avframe
Stream mapping:
  Stream #0:0 -> #0:0 (scpr (native) -> wrapped_avframe (native))
Press [q] to stop, [?] for help
Error while decoding stream #0:0: Invalid argument
    Last message repeated 11 times
Error while decoding stream #0:0: Not yet implemented in FFmpeg, patches welcome
Error while decoding stream #0:0: Invalid argument
    Last message repeated 3 times
Error while decoding stream #0:0: Not yet implemented in FFmpeg, patches welcome
Error while decoding stream #0:0: Invalid argument
    Last message repeated 53 times
Program received signal SIGFPE, Arithmetic exception.
0x08c5d888 in __udivdi3 ()
(gdb) bt
#0  0x08c5d888 in __udivdi3 ()
#1  0x086ad541 in decode0 (gb=0xb68c7028, rc=0xb68c7034, cumFreq=0, freq=0, 
    total_freq=0) at libavcodec/scpr.c:164
#2  0x086adc27 in decode_value (s=s@entry=0xb68c7020, 
    cnt=cnt@entry=0xb7594900, step=step@entry=1, rval=0xbfffe724, maxc=256)
    at libavcodec/scpr.c:205
#3  0x086aea7f in decompress_p (plinesize=<optimized out>, 
    prev=<optimized out>, linesize=<optimized out>, dst=<optimized out>, 
    avctx=0x9a29f00) at libavcodec/scpr.c:482
#4  decode_frame (avctx=0x9a29f00, data=0x9a2c240, got_frame=0xbfffe83c, 
    avpkt=0xbfffe7ac) at libavcodec/scpr.c:770
#5  0x0872a939 in avcodec_decode_video2 (avctx=0x9a29f00, picture=0x9a2c240, 
    got_picture_ptr=0xbfffe83c, avpkt=0xbfffe938) at libavcodec/utils.c:2263
#6  0x0872b8bd in do_decode (avctx=avctx@entry=0x9a29f00, 
    pkt=pkt@entry=0xbfffe938) at libavcodec/utils.c:2796
#7  0x0872c690 in avcodec_send_packet (avctx=0x9a29f00, avpkt=<optimized out>)
    at libavcodec/utils.c:2885
#8  0x080e85b7 in decode (pkt=0xbfffe938, got_frame=0xbfffead4, 
    frame=<optimized out>, avctx=0x9a29f00) at ffmpeg.c:2052
#9  decode_video (ist=ist@entry=0x9a29da0, pkt=pkt@entry=0xbfffeb14, 
    got_output=got_output@entry=0xbfffead4, eof=0) at ffmpeg.c:2248
#10 0x080e9976 in process_input_packet (ist=0x9a29da0, pkt=0xbfffed44, 
    no_eof=0) at ffmpeg.c:2491
---Type <return> to continue, or q <return> to quit---
#11 0x080c7a46 in process_input (file_index=<optimized out>) at ffmpeg.c:4251
#12 transcode_step () at ffmpeg.c:4339
#13 transcode () at ffmpeg.c:4393
#14 main (argc=<optimized out>, argv=<optimized out>) at ffmpeg.c:4598
(gdb) 

Attachments (1)

browsing_fuzz.avi (2.1 MB) - added by ami_stuff 4 weeks ago.

Change History (2)

Changed 4 weeks ago by ami_stuff

comment:1 Changed 4 weeks ago by richardpl

  • Component changed from undetermined to avcodec
  • Keywords scpr added
  • Priority changed from normal to important
  • Reproduced by developer set
  • Resolution set to fixed
  • Status changed from new to closed
  • Version changed from unspecified to git-master
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