[FFmpeg-trac] #8244(undetermined:new): heap-buffer-overflow at libavfilter/vf_bitplanenoise.c
FFmpeg
trac at avcodec.org
Fri Oct 11 06:38:32 EEST 2019
#8244: heap-buffer-overflow at libavfilter/vf_bitplanenoise.c
-------------------------------------+-------------------------------------
Reporter: Suhwan | Type: defect
Status: new | Priority: normal
Component: | Version: git-
undetermined | master
Keywords: asan | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug:
There is a heap-buffer-overflow at libavfilter/vf_bitplanenoise.c:174 in
filter_frame.
I compiled ffmpeg with "--toolchain=clang-asan" to check the heap buffer
overflow and attached log file.
How to reproduce:
{{{
% ffmpeg_g -y -r 109 -i $PoC -filter_complex bitplanenoise -target svcd
-loglevel 99 -map 0 -c:s:9 jpeg2000 -aframes 55 -ab 878k -ar 48000 -b:v
762k tmp.s16be
ffmpeg version N-95314-g1331e00179 Copyright (c) 2000-2019 the FFmpeg
developers
built with clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final)
configuration: --cc=clang --cxx=clang++ --ld=clang --enable-debug
--toolchain=clang-asan
}}}
Here's ASAN log
{{{
==47006==ERROR: AddressSanitizer: heap-buffer-overflow on address
0x619000008262 at pc 0x0000009b6138 bp 0x7fffffffa5b0 sp 0x7fffffffa5a8
READ of size 2 at 0x619000008262 thread T0
#0 0x9b6137 in filter_frame
ffmpeg/libavfilter/vf_bitplanenoise.c:174:13
#1 0x827289 in ff_filter_activate_default
ffmpeg/libavfilter/avfilter.c:1071:11
#2 0x827289 in ff_filter_activate ffmpeg/libavfilter/avfilter.c:1430
#3 0x870182 in push_frame ffmpeg/libavfilter/buffersrc.c:187:15
#4 0x870182 in av_buffersrc_add_frame_internal
ffmpeg/libavfilter/buffersrc.c:261
#5 0x86ebc2 in av_buffersrc_add_frame_flags
ffmpeg/libavfilter/buffersrc.c:170:16
#6 0x666867 in ifilter_send_frame ffmpeg/fftools/ffmpeg.c:2196:11
#7 0x666867 in send_frame_to_filters ffmpeg/fftools/ffmpeg.c:2270
#8 0x6075f7 in decode_video ffmpeg/fftools/ffmpeg.c:2469:11
#9 0x6075f7 in process_input_packet ffmpeg/fftools/ffmpeg.c:2623
#10 0x6450b8 in process_input ffmpeg/fftools/ffmpeg.c:4313:23
#11 0x5e7157 in transcode_step ffmpeg/fftools/ffmpeg.c:4638:11
#12 0x5e7157 in transcode ffmpeg/fftools/ffmpeg.c:4692
#13 0x5db65b in main ffmpeg/fftools/ffmpeg.c:4894:9
#14 0x7ffff5c93b96 in __libc_start_main /build/glibc-
OTsEL5/glibc-2.27/csu/../csu/libc-start.c:310
#15 0x41def9 in _start (ffmpeg/ffmpeg_g+0x41def9)
0x619000008262 is located 30 bytes to the left of 1055-byte region
[0x619000008280,0x61900000869f)
allocated by thread T0 here:
#0 0x4de9e8 in posix_memalign (ffmpeg/ffmpeg_g+0x4de9e8)
#1 0x8564fb1 in av_malloc ffmpeg/libavutil/mem.c:87:9
#2 0x84cc231 in av_buffer_alloc ffmpeg/libavutil/buffer.c:72:12
#3 0x84cc231 in av_buffer_allocz ffmpeg/libavutil/buffer.c:85
#4 0x84d0a56 in pool_alloc_buffer ffmpeg/libavutil/buffer.c:313:26
#5 0x84d0a56 in av_buffer_pool_get ffmpeg/libavutil/buffer.c:349
#6 0x91af8d in ff_frame_pool_get ffmpeg/libavfilter/framepool.c:222:29
#7 0x15a660c in ff_default_get_video_buffer
ffmpeg/libavfilter/video.c:90:13
#8 0x124c7f9 in scale_frame ffmpeg/libavfilter/vf_scale.c:460:11
#9 0x124a8ec in filter_frame ffmpeg/libavfilter/vf_scale.c:549:11
#10 0x827289 in ff_filter_activate_default
ffmpeg/libavfilter/avfilter.c:1071:11
#11 0x827289 in ff_filter_activate ffmpeg/libavfilter/avfilter.c:1430
#12 0x870135 in push_frame ffmpeg/libavfilter/buffersrc.c:187:15
#13 0x870135 in av_buffersrc_add_frame_internal
ffmpeg/libavfilter/buffersrc.c:261
#14 0x86ebc2 in av_buffersrc_add_frame_flags
ffmpeg/libavfilter/buffersrc.c:170:16
#15 0x666867 in ifilter_send_frame ffmpeg/fftools/ffmpeg.c:2196:11
#16 0x666867 in send_frame_to_filters ffmpeg/fftools/ffmpeg.c:2270
#17 0x6075f7 in decode_video ffmpeg/fftools/ffmpeg.c:2469:11
#18 0x6075f7 in process_input_packet ffmpeg/fftools/ffmpeg.c:2623
#19 0x6450b8 in process_input ffmpeg/fftools/ffmpeg.c:4313:23
#20 0x5e7157 in transcode_step ffmpeg/fftools/ffmpeg.c:4638:11
#21 0x5e7157 in transcode ffmpeg/fftools/ffmpeg.c:4692
#22 0x5db65b in main ffmpeg/fftools/ffmpeg.c:4894:9
#23 0x7ffff5c93b96 in __libc_start_main /build/glibc-
OTsEL5/glibc-2.27/csu/../csu/libc-start.c:310
SUMMARY: AddressSanitizer: heap-buffer-overflow
ffmpeg/libavfilter/vf_bitplanenoise.c:174:13 in filter_frame
}}}
Please confirm.
Thanks
--
Ticket URL: <https://trac.ffmpeg.org/ticket/8244>
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