Detailed report: https://clusterfuzz.com/testcase?key=4579815152418816

Fuzzer: inferno_webbot
Job Type: windows_asan_chrome
Platform Id: windows

Crash Type: Heap-use-after-free READ 8
Crash Address: 0x126e0e5e9730
Crash State:
  ui::ReplaceTemplateExpressions
  ui::I18nSourceStream::FilterData
  net::FilterSourceStream::DoFilterData
  
Sanitizer: address (ASAN)

Recommended Security Severity: High

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4579815152418816

Additional requirements: Requires Gestures

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

dpapad: Any idea what might be causing this? If not, feel free to pass it back to me for re-triage.

Could this be a duplicate of issue 863318 ?

This does indeed look like the same issue in 863318. I'm trying hard to actually reproduce to ensure that it is indeed a use-after-free and not just a missing i18n key. This seems to confirm suspicions that it is a use-after-free.

Closing as a dup of that and will continue analysis on the other bug.

ClusterFuzz has detected this issue as fixed in range 579993:579994.

Detailed report: https://clusterfuzz.com/testcase?key=6573954400256000

Fuzzer: attekett_surku_fuzzer
Job Type: linux_msan_chrome
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  ui::ReplaceTemplateExpressions
  ui::I18nSourceStream::FilterData
  net::FilterSourceStream::DoFilterData
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Low

Regressed: https://clusterfuzz.com/revisions?job=linux_msan_chrome&range=575178:575179
Fixed: https://clusterfuzz.com/revisions?job=linux_msan_chrome&range=579993:579994

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6573954400256000

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.

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