This is a serious security regression. If you are not able to fix this quickly, please revert the change that introduced it.

If this doesn't affect a release branch, or has not been properly classified for severity, please update the Security_Impact or Security_Severity labels, and remove the ReleaseBlock label. To disable this altogether, apply ReleaseBlock-NA.

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

Looks like regression from https://chromium.googlesource.com/chromium/src/+/96f85b68747a679ea1ac4cd05d6743ae5f7142b7

Automatically applying components based on crash stacktrace and information from OWNERS files.

If this is incorrect, please apply the Test-Predator-Wrong-Components label.

bokan@, this may be as simple as checking has_been_disposed_ from PaintLayerScrollableArea::RegisterForAnimation (and maybe also from PaintLayerScrollableArea::DeregisterForAnimation, for good measure).

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/2d02373d84f7c9f8c6705a5735a859574f34cf4e

commit 2d02373d84f7c9f8c6705a5735a859574f34cf4e
Author: Steve Kobes <skobes@chromium.org>
Date: Tue Feb 13 21:09:10 2018

Speculative fix for crashes in PLSA::RegisterForAnimation.

Bug:  811074 , 811246 
Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
Change-Id: Ib3e7fb4ab6dab4ac53ffef7aaf6bdc96161c538d
Reviewed-on: https://chromium-review.googlesource.com/916734
Reviewed-by: David Bokan <bokan@chromium.org>
Commit-Queue: Steve Kobes <skobes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#536473}
[modify] https://crrev.com/2d02373d84f7c9f8c6705a5735a859574f34cf4e/third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp

ClusterFuzz testcase 6250569824731136 is verified as fixed, so closing issue as verified.

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

ClusterFuzz has detected this issue as fixed in range 536320:536321.

Detailed report: https://clusterfuzz.com/testcase?key=4825604164419584

Fuzzer: attekett_dom_fuzzer
Job Type: linux_lsan_chrome_mp
Platform Id: linux

Crash Type: Heap-use-after-free READ 8
Crash Address: 0x60f000014780
Crash State:
  GetLayoutBox
  GetLayoutBox
  blink::PaintLayerScrollableArea::RegisterForAnimation
  
Sanitizer: address (ASAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=linux_lsan_chrome_mp&range=535623:535643
Fixed: https://clusterfuzz.com/revisions?job=linux_lsan_chrome_mp&range=536320:536321

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4825604164419584

Additional requirements: Requires Gestures

See https://github.com/google/clusterfuzz-tools for more information.

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

I'm afraid the VRP panel declined to reward for this bug. Thanks for the report!

This bug requires manual review: M67 has already been promoted to the beta branch, so this requires manual review
Please contact the milestone owner if you have questions.
Owners: cmasso@(Android), cmasso@(iOS), kbleicher@(ChromeOS), govind@(Desktop)

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

+awhalley@ for M67 merge review. 

Already in M66 (!), no merge needed.

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