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Issue 736672 link

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Issue metadata

Status: WontFix
Owner:
Closed: Jul 2017
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug-Security



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Use-of-uninitialized-value in gfx::internal::TextRunHarfBuzz::GetClusterAt

Project Member Reported by ClusterFuzz, Jun 25 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5534830011088896

Fuzzer: jsbell_indexeddb
Job Type: linux_msan_chrome
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  gfx::internal::TextRunHarfBuzz::GetClusterAt
  gfx::RenderTextHarfBuzz::DrawVisualText
  gfx::RenderText::Draw
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Low

Regressed: https://clusterfuzz.com/revisions?job=linux_msan_chrome&range=465377:465390

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5534830011088896


Additional requirements: Requires Gestures

Issue filed automatically.

See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.
 
Cc: msw@chromium.org
Components: UI>Input>Text
Owner: simonh...@chromium.org
Status: Assigned (was: Untriaged)
The only change to RenderTextHarfbuzz in the blame range is crrev.com/2817403002. +owner and reviewer to take a look.
Project Member

Comment 2 by sheriffbot@chromium.org, Jun 26 2017

Labels: Pri-2
Project Member

Comment 3 by ClusterFuzz, Jul 26 2017

Status: WontFix (was: Assigned)
ClusterFuzz testcase 5534830011088896 is flaky and no longer reproduces, so closing issue.

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

Comment 4 by sheriffbot@chromium.org, Nov 2 2017

Labels: -Restrict-View-SecurityTeam allpublic
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

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