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

yhirano@ Could you take a look? A cursory git-blame of https://cs.chromium.org/chromium/src/third_party/blink/renderer/core/html/imports/html_imports_controller.cc?q=html_imports_controller.cc:50&sq=package:chromium&g=0&l=50 shows you having last touched these lines. Thanks!

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

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

ClusterFuzz has detected this issue as fixed in range 580031:580033.

Detailed report: https://clusterfuzz.com/testcase?key=6579275797626880

Fuzzer: noel-image-flip
Job Type: linux_asan_chrome_v8_arm
Platform Id: linux

Crash Type: Use-after-poison READ 4
Crash Address: 0x41641a94
Crash State:
  blink::HTMLImportsController::Dispose
  blink::Document::Shutdown
  blink::LocalFrame::Detach
  
Sanitizer: address (ASAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_chrome_v8_arm&range=570344:570345
Fixed: https://clusterfuzz.com/revisions?job=linux_asan_chrome_v8_arm&range=580031:580033

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6579275797626880

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.

ClusterFuzz testcase 6579275797626880 is verified as fixed, so closing issue as verified.

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

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