[FFmpeg-trac] #6153(undetermined:new): Use of uninitialized memory in av_packet_unpack_dictionary()
FFmpeg
trac at avcodec.org
Thu Feb 16 22:53:30 EET 2017
#6153: Use of uninitialized memory in av_packet_unpack_dictionary()
-------------------------------------+-------------------------------------
Reporter: tsmith | Type: defect
Status: new | Priority: normal
Component: | Version:
undetermined | unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
How to reproduce:
{{{
% ffmpeg -f ivf -i test_case.ivf -frames 5 -f null -
ffmpeg version N-83533-gada281d Copyright (c) 2000-2017 the FFmpeg
developers
built with clang version 3.8.0-2ubuntu4 (tags/RELEASE_380/final)
configuration: --cc=clang --cxx=clang++ --disable-libxcb --disable-xlib
--disable-logging --disable-ffprobe --disable-ffplay --disable-sdl2
--disable-ffserver --disable-doc --disable-pthreads --disable-network
--disable-d3d11va --disable-dxva2 --disable-vaapi --disable-vda --disable-
vdpau --disable-stripping --disable-runtime-cpudetect --disable-postproc
--disable-securetransport --disable-iconv --disable-swscale --disable-
avdevice --disable-videotoolbox --disable-everything --enable-
encoder=wrapped_avframe --disable-lzma --enable-protocol='file,pipe'
--enable-muxer=null --enable-demuxer=ivf --enable-parser=vp9 --enable-
decoder=vp9 --disable-pic
libavutil 55. 47.100 / 55. 47.100
libavcodec 57. 80.100 / 57. 80.100
libavformat 57. 66.102 / 57. 66.102
libavfilter 6. 73.100 / 6. 73.100
libswresample 2. 4.100 / 2. 4.100
[NULL @ 0x5719e80] [IMGUTILS @ 0xffeffffb0] Picture size 20486x51463 is
invalid
[ivf @ 0x570f840] Failed to open codec in avformat_find_stream_info
[vp9 @ 0x5719e80] Warning: not compiled with thread support, using thread
emulation
==57750== Conditional jump or move depends on uninitialised value(s)
==57750== at 0x4B21FA: av_packet_unpack_dictionary (avpacket.c:501)
==57750== by 0x4BE62C: add_metadata_from_side_data (utils.c:757)
==57750== by 0x4BE62C: ff_init_buffer_info (utils.c:800)
==57750== by 0x4BEF45: ff_decode_frame_props (utils.c:878)
==57750== by 0x4BEF45: get_buffer_internal (utils.c:928)
==57750== by 0x4BEF45: ff_get_buffer (utils.c:955)
==57750== by 0x4D0CDE: vp9_alloc_frame (vp9.c:191)
==57750== by 0x4D0CDE: vp9_decode_frame (vp9.c:4048)
==57750== by 0x4C5D0D: avcodec_decode_video2 (utils.c:2263)
==57750== by 0x4C9302: do_decode (utils.c:2796)
==57750== by 0x4C9190: avcodec_send_packet (utils.c:2885)
==57750== by 0x4A0B42: try_decode_frame (utils.c:2997)
==57750== by 0x49B868: avformat_find_stream_info (utils.c:3698)
==57750== by 0x4117A1: open_input_file (ffmpeg_opt.c:1022)
==57750== by 0x40FEDC: open_files (ffmpeg_opt.c:3234)
==57750== by 0x40F82E: ffmpeg_parse_options (ffmpeg_opt.c:3274)
==57750== Uninitialised value was created by a stack allocation
==57750== at 0x4BE1A0: ff_init_buffer_info (utils.c:761)
==57750==
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/6153>
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