[FFmpeg-trac] #5062(avcodec:new): signed integer overflow in decode_scaling_list
FFmpeg
trac at avcodec.org
Fri Dec 4 23:33:08 CET 2015
#5062: signed integer overflow in decode_scaling_list
---------------------------------+--------------------------------------
Reporter: tsmith | Type: defect
Status: new | Priority: normal
Component: avcodec | Version: git-master
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
---------------------------------+--------------------------------------
Summary of the bug:
This is an Undefined behavior sanitizer (UBSan) runtime error.
libavcodec/h264_ps.c:261:30: runtime error: signed integer overflow: 103 +
2147483644 cannot be represented in type 'int'
#0 0x90605e in decode_scaling_list
/home/user/code/ffmpeg/libavcodec/h264_ps.c:261:30
#1 0x900e8b in decode_scaling_matrices
/home/user/code/ffmpeg/libavcodec/h264_ps.c:291:13
#2 0x8f771d in ff_h264_decode_seq_parameter_set
/home/user/code/ffmpeg/libavcodec/h264_ps.c:386:9
#3 0x7a2628 in decode_nal_units
/home/user/code/ffmpeg/libavcodec/h264.c:1627:25
#4 0x7b4469 in h264_decode_frame
/home/user/code/ffmpeg/libavcodec/h264.c:1840:17
#5 0xe89945 in avcodec_decode_video2
/home/user/code/ffmpeg/libavcodec/utils.c:2105:19
#6 0x756b2d in try_decode_frame
/home/user/code/ffmpeg/libavformat/utils.c:2752:19
#7 0x7434ab in avformat_find_stream_info
/home/user/code/ffmpeg/libavformat/utils.c:3401:9
#8 0x507779 in open_input_file
/home/user/code/ffmpeg/ffmpeg_opt.c:970:11
#9 0x50365f in open_files /home/user/code/ffmpeg/ffmpeg_opt.c:2939:15
#10 0x502706 in ffmpeg_parse_options
/home/user/code/ffmpeg/ffmpeg_opt.c:2976:11
#11 0x57ab79 in main /home/user/code/ffmpeg/ffmpeg.c:4273:11
#12 0x7fa992792ec4 in __libc_start_main /build/buildd/eglibc-2.19/csu
/libc-start.c:287
#13 0x41ad25 in _start (/home/user/Desktop/ffmpeg/ffmpeg_ub+0x41ad25)
How to reproduce:
{{{
% ./ffmpeg -v 0 -nostats -f h264 -i test_case.264 -f null -
ffmpeg version N-76984-g259c71c
built on Linux x86_64
}}}
Patches should be submitted to the ffmpeg-devel mailing list and not this
bug tracker.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/5062>
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