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Issue metadata

Status: Verified
Owner:
Closed: Jul 2017
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 0
Type: Bug-Security



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Use-of-uninitialized-value in cc::LayerTreeHostImpl::SetContentHasNonAAPaint

Project Member Reported by ClusterFuzz, Jul 25 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5705966707539968

Fuzzer: lcamtuf_cross_fuzz
Job Type: linux_msan_chrome
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  cc::LayerTreeHostImpl::SetContentHasNonAAPaint
  cc::LayerTreeHost::FinishCommitOnImplThread
  cc::ProxyImpl::ScheduledActionCommit
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=linux_msan_chrome&range=489104:489161

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5705966707539968


Issue filed automatically.

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

Comment 1 by sheriffbot@chromium.org, Jul 25 2017

Labels: M-61
Project Member

Comment 2 by sheriffbot@chromium.org, Jul 25 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, Jul 25 2017

Labels: Pri-1
Cc: zmo@chromium.org enne@chromium.org
Labels: -Pri-1 Pri-0
Owner: ericrk@chromium.org
Status: Assigned (was: Untriaged)
This suddenly started crashing MSan builds on startup. Can you please take a look soon, this blocks fuzzing using MSan builds

Comment 5 by vakh@chromium.org, Jul 25 2017

Components: Internals>Compositing
Project Member

Comment 6 by ClusterFuzz, Jul 26 2017

ClusterFuzz has detected this issue as fixed in range 489186:489237.

Detailed report: https://clusterfuzz.com/testcase?key=5705966707539968

Fuzzer: lcamtuf_cross_fuzz
Job Type: linux_msan_chrome
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  cc::LayerTreeHostImpl::SetContentHasNonAAPaint
  cc::LayerTreeHost::FinishCommitOnImplThread
  cc::ProxyImpl::ScheduledActionCommit
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=linux_msan_chrome&range=489104:489161
Fixed: https://clusterfuzz.com/revisions?job=linux_msan_chrome&range=489186:489237

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5705966707539968


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.
Project Member

Comment 7 by ClusterFuzz, Jul 26 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 5705966707539968 is verified as fixed, so closing issue as verified.

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

Comment 8 by sheriffbot@chromium.org, Jul 26 2017

Labels: -Restrict-View-SecurityTeam Restrict-View-SecurityNotify
Project Member

Comment 9 by sheriffbot@chromium.org, Nov 1 2017

Labels: -Restrict-View-SecurityNotify 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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