Looks like regression from https://chromium.googlesource.com/chromium/src/+/ca2eabdc854a972db31fec01af6bb22ae643af4c

Author: halton.huo
Project: chromium
Changelist: https://chromium.googlesource.com/chromium/src/+/ca2eabdc854a972db31fec01af6bb22ae643af4c
Time: Mon Jul 06 08:17:40 2015
The CL last changed line 132 of file image_downloader_impl.cc, which is stack frame 4.

I think https://chromium.googlesource.com/chromium/src.git/+/d2ac649bc631233f4355860a011d3d30f985bb67 should fix it, than CF will auto-close this. If not closed within a day, we should look more into this, might be another bug.

Hi, I suppose this bug has been fixed. Would you please help to confirm whether this crash can still be observed? If not, I'd like to close this. Thanks.

ClusterFuzz has detected this issue as fixed in range 416466:416526.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5765792664911872

Fuzzer: attekett_dom_fuzzer
Job Type: linux_asan_chrome_chromeos
Platform Id: linux

Crash Type: Heap-use-after-free READ 8
Crash Address: 0x6110000796c0
Crash State:
  base::ObserverListBase<content::RenderThreadObserver>::RemoveObserver
  content::ImageDownloaderImpl::~ImageDownloaderImpl
  content::ImageDownloaderImpl::~ImageDownloaderImpl
  
Recommended Security Severity: Medium

Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_asan_chrome_chromeos&range=416466:416526

Unminimized Testcase: https://cluster-fuzz.appspot.com/download/AMIfv97XBdSQa4ic-T1XTMXXX8QDiUSjMLC_vXsEyzeyVwVYtTWfPilc8OLzP4QZxnasuXqSzCF7UY7YCq4jbMAKZ3cRF1BYgbnmSnJ4GaDbpcXqiUqp5QE74TPss__s5ztCqQT6ZQhGndhJXBVKfSfZpvxERID-OA?testcase_id=5765792664911872


Additional requirements: Requires Gestures

See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs 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 is verified as fixed, closing issue.

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

Your change meets the bar and is auto-approved for M54 (branch: 2840)

Will pick commit d2ac649bc631233f4355860a011d3d30f985bb67 into M54 branch soon.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a64d2294bbe77cf839715bfefa407d61147e79d6

commit a64d2294bbe77cf839715bfefa407d61147e79d6
Author: Vaclav Brozek <vabr@chromium.org>
Date: Tue Sep 13 10:15:30 2016

Forbid ImageDownloaderImpl from accessing RenderThread instance after message loop shutdown.

This CL fixes the crash caused by following possible scenario:
- the message loop is shutdown.
- during its destructor it calls connection error on ImageDownloaderImpl.
- the strong binding of ImageDownloaderImpl causes it to be destructed.
- the destructor calls RenderThread::Get()->RemoveObserver(this),
  which is not valid any more.

BUG=  640999  
TBR=jochen@chromium.org

Review-Url: https://codereview.chromium.org/2286603002
Cr-Commit-Position: refs/heads/master@{#414985}
(cherry picked from commit d2ac649bc631233f4355860a011d3d30f985bb67)

Review URL: https://codereview.chromium.org/2335173002 .

Cr-Commit-Position: refs/branch-heads/2840@{#324}
Cr-Branched-From: 1ae106dbab4bddd85132d5b75c670794311f4c57-refs/heads/master@{#414607}

[modify] https://crrev.com/a64d2294bbe77cf839715bfefa407d61147e79d6/content/renderer/image_downloader/image_downloader_impl.cc

This bug has been closed for more than 14 weeks. Removing security view restrictions.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot