Opened 9 years ago
Closed 5 years ago
#5132 closed defect (fixed)
signed integer overflow in avformat_find_stream_info()
Reported by: | tsmith | Owned by: | |
---|---|---|---|
Priority: | normal | Component: | avformat |
Version: | git-master | Keywords: | ubsan codecpar |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | yes | |
Analyzed by developer: | no |
Description
Summary of the bug:
UBSan: libavformat/utils.c:3498:49: runtime error: signed integer overflow: 2045163756 * 2 cannot be represented in type 'int'
How to reproduce:
% ffmpeg -f ivf -i <test_case> -f null - ffmpeg version N-77718-g72673ad Copyright (c) 2000-2016 the FFmpeg developers built with Ubuntu clang version 3.7.1-svn253742-1~exp1 (branches/release_37) (based on LLVM 3.7.1) configuration: --cc=clang --cxx=clang++ --disable-libxcb --disable-xlib --disable-logging --disable-ffprobe --disable-ffplay --disable-sdl --disable-ffserver --disable-doc --disable-pthreads --disable-network --disable-d3d11va --disable-dxva2 --disable-vaapi --disable-vda --disable-vdpau --disable-stripping --disable-runtime-cpudetect --disable-securetransport --disable-iconv libavutil 55. 12.100 / 55. 12.100 libavcodec 57. 22.100 / 57. 22.100 libavformat 57. 21.101 / 57. 21.101 libavdevice 57. 0.100 / 57. 0.100 libavfilter 6. 23.100 / 6. 23.100 libswscale 4. 0.100 / 4. 0.100 libswresample 2. 0.101 / 2. 0.101 st:0 has too large timebase, reducing ...full output attached... libavformat/utils.c:3498:49: runtime error: signed integer overflow: 2045163756 * 2 cannot be represented in type 'int' #0 0xc23ac9 in avformat_find_stream_info /home/user/code/ffmpeg/libavformat/utils.c:3498:49 #1 0x53c6cb in open_input_file /home/user/code/ffmpeg/ffmpeg_opt.c:970:11 #2 0x53a94f in open_files /home/user/code/ffmpeg/ffmpeg_opt.c:2999:15 #3 0x53a11c in ffmpeg_parse_options /home/user/code/ffmpeg/ffmpeg_opt.c:3036:11 #4 0x56f5ab in main /home/user/code/ffmpeg/ffmpeg.c:4292:11 #5 0x7f5daa759ec4 in __libc_start_main /build/buildd/eglibc-2.19/csu/libc-start.c:287 #6 0x466445 in _start (/home/user/Desktop/ffmpeg/ffmpeg_full+0x466445)
Patches should be submitted to the ffmpeg-devel mailing list and not this bug tracker.
Attachments (2)
Change History (5)
by , 9 years ago
Attachment: | test_case.ivf added |
---|
by , 9 years ago
Attachment: | call_stack.txt added |
---|
comment:1 by , 8 years ago
Keywords: | ubsan codecpar added |
---|
comment:2 by , 5 years ago
Status: | new → open |
---|
comment:3 by , 5 years ago
Reproduced by developer: | set |
---|---|
Resolution: | → fixed |
Status: | open → closed |
Note:
See TracTickets
for help on using tickets.
Not reproducible since 6f69f7a8bf6a0d013985578df2ef42ee6b1c7994
The relevant lines have not changed, I don't know if there still is an issue.
The offending line is (was):
ticks_per_frame was 2, time_base.num was bigger than INT_MAX / 2.