#11414: libavutil/mem.c:107:9 memory leaks
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Reporter: 0x20z | Type: defect
Status: new | Priority: important
Component: avutil | Version: git-master
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Summary of the bug:
{{{
Dear developers,
I have discovered a memory leaks vulnerability. The POC file is attached
to the session, and the version of ffmpeg is the main branch. Please
confirm.
}}}
How to reproduce:
{{{
git clone https://github.com/FFmpeg/FFmpeg.git
cd FFmpeg
./configure --cc=clang --cxx=clang++ --toolchain=clang-asan --extra-
cflags="-I$HOME/ffmpeg_build/include -O0 -fno-omit-frame-pointer -g"
--extra-cxxflags="-O0 -fno-omit-frame-pointer -g" --extra-
ldflags="-L$HOME/ffmpeg_build/include -fsanitize=address
-fsanitize=undefined -lubsan" --disable-optimizations --disable-stripping
--enable-cross-compile
make -j30
./ffmpeg -y -i poc -c:v mpeg4 -c:a copy -f mp4 /dev/null
}}}
LeakSanitizer :
{{{
==422562==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 112 byte(s) in 1 object(s) allocated from:
#0 0x55f122751a47 in posix_memalign
FFmpeg/ffmpeg+0x804a47) (BuildId:
cb5cd0d261a2955cf44e6c06c3b59ca23341b342)
#1 0x55f12732875f in av_malloc FFmpeg/libavutil/mem.c:107:9
#2 0x55f123c453d3 in ff_interleave_add_packet
FFmpeg/libavformat/mux.c:866:20
#3 0x55f123c463bc in ff_interleave_packet_per_dts
FFmpeg/libavformat/mux.c:971:20
#4 0x55f123c49ed8 in interleaved_write_packet
FFmpeg/libavformat/mux.c:1141:19
#5 0x55f123c4de91 in write_packet_common
FFmpeg/libavformat/mux.c:1172:16
#6 0x55f123c49d88 in write_packets_common
FFmpeg/libavformat/mux.c:1232:16
#7 0x55f123c49dcc in av_interleaved_write_frame
FFmpeg/libavformat/mux.c:1288:15
#8 0x55f1227f800c in write_packet FFmpeg/fftools/ffmpeg_mux.c:236:11
#9 0x55f1227f7ad3 in sync_queue_process
FFmpeg/fftools/ffmpeg_mux.c:280:16
#10 0x55f1227f2dac in mux_packet_filter
FFmpeg/fftools/ffmpeg_mux.c:356:15
#11 0x55f1227f1cd7 in muxer_thread FFmpeg/fftools/ffmpeg_mux.c:438:15
#12 0x55f122844d7b in task_wrapper
FFmpeg/fftools/ffmpeg_sched.c:2534:11
#13 0x7fd97dc94ac2 in start_thread nptl/./nptl/pthread_create.c:442:8
}}}
Found by：
{{{
Found by 0x20z
}}}
Thank you for your time and attention
--
Ticket URL: <https://trac.ffmpeg.org/ticket/11414>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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