Predator and CL could not provide any possible suspects.
Using the code search for the file, “mov.c” assigning to concern owner from GIT revision log.
Suspecting Commit#
https://chromium.googlesource.com/chromium/third_party/ffmpeg.git/+/6a8e3b038fe468c18764728dd45a07ca679d082d

@dalecurtis -- Could you please look into this issue, kindly reassign if it has nothing to do with your changes.
Thank You.

+isasi, seems this just needs a av_freep(&frame_duration_buffer) upon function exit?

https://chromium-review.googlesource.com/c/chromium/third_party/ffmpeg/+/777720

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/third_party/ffmpeg/+/3b3e9cda8f791c8bfa9a9e9f33dae63ddceff1bd

commit 3b3e9cda8f791c8bfa9a9e9f33dae63ddceff1bd
Author: Dale Curtis <dalecurtis@chromium.org>
Date: Fri Nov 17 22:54:56 2017

[mov] Fix leak of frame_duration_buffer in mov_fix_index().

Should be unconditionally freed at the end of mov_fix_index() in
case it hasn't been used during the fix up.

BUG= 782074 
TEST=no more leak

Signed-off-by: Dale Curtis <dalecurtis@chromium.org>
Change-Id: I98112227538e6ee69643fbcd83f385850d8bb077
Reviewed-on: https://chromium-review.googlesource.com/777720
Reviewed-by: Thomas Guilbert <tguilbert@chromium.org>

[modify] https://crrev.com/3b3e9cda8f791c8bfa9a9e9f33dae63ddceff1bd/libavformat/mov.c
[modify] https://crrev.com/3b3e9cda8f791c8bfa9a9e9f33dae63ddceff1bd/chromium/patches/README

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/aea3d2d4d8d304df1a029ef83d248508073bd066

commit aea3d2d4d8d304df1a029ef83d248508073bd066
Author: Dale Curtis <dalecurtis@chromium.org>
Date: Sat Nov 18 06:56:26 2017

Roll ffmpeg DEPS and fix additional ubsan issues.

This change enables AV_EF_EXPLODE such that all serious errors
encountered during demuxing are fatal. Previously ffmpeg would
try to ignore these in some cases; leading to ubsan or other
issues. Specifically  crbug.com/698524  and  crbug.com/710791 .

Due to the removal of the speex parser from ogg, there is one
test that needs updating with the roll too.

https://chromium.googlesource.com/chromium/third_party/ffmpeg.git/+log/1e816bccb5ff..252244150ad7

$ git log 1e816bccb..252244150 --date=short --no-merges --format='%ad %ae %s'
2017-11-17 dalecurtis [mpeg4video] Fix undefined shift on assumed 8-bit input.
2017-11-17 dalecurtis Disable unused ogg codec parsers; they have bugs we don't care about.
2017-11-17 dalecurtis Use ff_thread_once for fixed, float table init.
2017-11-17 dalecurtis Fixup some patches messages.
2017-11-17 dalecurtis [mov] Fix leak of frame_duration_buffer in mov_fix_index().
2017-11-17 dalecurtis Prevent undefined shift with wrap_bits >= 63.
2017-11-15 hubbe avformat/mov: Check size of STSC allocation
2017-11-17 jstebbins [PATCH] lavf/mov: don't read outside frag_index bounds

Created with:
  roll-dep src/third_party/ffmpeg

BUG= 786269 , 782074 , 783459 , 784159 , 654612 , 779924 , 710791 , 698524 
TEST=security test cases no longer fail.

Cq-Include-Trybots: master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
Change-Id: Ibbf3c32080705d6484682351a351663c51a7f752
Reviewed-on: https://chromium-review.googlesource.com/777408
Commit-Queue: Dale Curtis <dalecurtis@chromium.org>
Reviewed-by: Dan Sanders <sandersd@chromium.org>
Cr-Commit-Position: refs/heads/master@{#517709}
[modify] https://crrev.com/aea3d2d4d8d304df1a029ef83d248508073bd066/DEPS
[modify] https://crrev.com/aea3d2d4d8d304df1a029ef83d248508073bd066/media/filters/ffmpeg_demuxer_unittest.cc
[modify] https://crrev.com/aea3d2d4d8d304df1a029ef83d248508073bd066/media/filters/ffmpeg_glue.cc

ClusterFuzz has detected this issue as fixed in range 517706:517712.

Detailed report: https://clusterfuzz.com/testcase?key=5037394821906432

Fuzzer: libFuzzer_media_pipeline_integration_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Direct-leak
Crash Address: 
Crash State:
  mov_fix_index
  mov_read_trak
  mov_read_default
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=433017:433084
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=517706:517712

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5037394821906432

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.

ClusterFuzz testcase 5037394821906432 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.