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Issue 753179 link

Starred by 2 users

Issue metadata

Status: Duplicate
Merged: issue 752715
Owner:
Closed: Aug 2017
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug-Security



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Use-of-uninitialized-value in blink::LayoutText::LocalSelectionRect

Project Member Reported by ClusterFuzz, Aug 8 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6293318500876288

Fuzzer: bj_broddelwerk
Job Type: linux_msan_content_shell_drt
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  blink::LayoutText::LocalSelectionRect
  blink::LayoutText::LocalVisualRect
  blink::PaintInvalidator::InvalidatePaint
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=linux_msan_content_shell_drt&range=490017:490023

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6293318500876288


Issue filed automatically.

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

Comment 1 by sheriffbot@chromium.org, Aug 8 2017

Labels: M-62
Project Member

Comment 2 by sheriffbot@chromium.org, Aug 8 2017

Labels: ReleaseBlock-Stable
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
Project Member

Comment 3 by sheriffbot@chromium.org, Aug 8 2017

Labels: Pri-1
Components: Blink>Editing>Selection
Owner: yoichio@chromium.org
yoichio@, can you please have a look?

It's outside the regression range, but https://chromium-review.googlesource.com/c/577432 changed the affected function from using calls that returned a pair<int,int> to functions returning Optional<int>.
Status: Assigned (was: Untriaged)
Mergedinto: 752715
Status: Duplicate (was: Assigned)
Project Member

Comment 7 by sheriffbot@chromium.org, Nov 17 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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