[FFmpeg-trac] #5061(avcodec:new): signed integer overflow in ff_init_poc
FFmpeg
trac at avcodec.org
Fri Dec 4 23:25:29 CET 2015
#5061: signed integer overflow in ff_init_poc
---------------------------------+--------------------------------------
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.c:1198:36: runtime error: signed integer overflow: -2928 +
-2147483647 cannot be represented in type 'int'
#0 0x7b1dd8 in ff_init_poc
/home/user/code/ffmpeg/libavcodec/h264.c:1167:26
#1 0x950abd in ff_h264_decode_slice_header
/home/user/code/ffmpeg/libavcodec/h264_slice.c:1728:9
#2 0x7a2b82 in decode_nal_units
/home/user/code/ffmpeg/libavcodec/h264.c:1532:28
#3 0x7b4469 in h264_decode_frame
/home/user/code/ffmpeg/libavcodec/h264.c:1840:17
#4 0xe89945 in avcodec_decode_video2
/home/user/code/ffmpeg/libavcodec/utils.c:2105:19
#5 0x5b383a in decode_video /home/user/code/ffmpeg/ffmpeg.c:2090:11
#6 0x5b383a in process_input_packet
/home/user/code/ffmpeg/ffmpeg.c:2339
#7 0x5d683d in process_input /home/user/code/ffmpeg/ffmpeg.c:3960:5
#8 0x5810a8 in transcode_step /home/user/code/ffmpeg/ffmpeg.c:4048:11
#9 0x5810a8 in transcode /home/user/code/ffmpeg/ffmpeg.c:4102
#10 0x57af12 in main /home/user/code/ffmpeg/ffmpeg.c:4295:9
#11 0x7f01b2790ec4 in __libc_start_main /build/buildd/eglibc-2.19/csu
/libc-start.c:287
#12 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/5061>
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