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Issue metadata

Status: Verified
Owner:
Closed: Jun 2016
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug-Security



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Use-of-uninitialized-value in blink::Font::canShapeWordByWord

Project Member Reported by ClusterFuzz, Jun 17 2016

Issue description

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5506881766555648

Fuzzer: mbarbella_js_mutation_layout
Job Type: linux_msan_content_shell_drt
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  blink::Font::canShapeWordByWord
  blink::CachingWordShaper::width
  blink::Font::width
  
Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_msan_content_shell_drt&range=399234:399406

Minimized Testcase (0.28 Kb): https://cluster-fuzz.appspot.com/download/AMIfv97SaG-M6UGrS1agiG7l8NPq3vV85QXz5rnKt8_mQS7Zy4C-mDZ0UMvUDxYUVbo3DT9hlRx7MzedtUlIP1MLjHlRgFrId4LRFfM5kMa_C3XcYgXXAmKFaNSbEcG2Ywyh8J8r_Kukq73funnUwkZ74kmk1riHNA

Filer: mmoroz

See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.
 

Comment 1 by mmoroz@chromium.org, Jun 17 2016

Cc: mmoroz@chromium.org
Labels: Pri-2
Owner: e...@chromium.org
eae@, could you please help to find an owner?

Comment 2 by est...@chromium.org, Jun 17 2016

Components: Blink>Fonts
Labels: M-53
Project Member

Comment 3 by ClusterFuzz, Jun 18 2016

Status: Assigned (was: Available)
Project Member

Comment 4 by sheriffbot@chromium.org, Jun 18 2016

Labels: ReleaseBlock-Beta
This issue is a security regression. If you are not able to fix this quickly, please revert the change that introduced it.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot
Project Member

Comment 5 by sheriffbot@chromium.org, Jun 18 2016

Labels: -Pri-2 Pri-1
Project Member

Comment 6 by ClusterFuzz, Jun 22 2016

ClusterFuzz has detected this issue as fixed in range 400850:400924.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5506881766555648

Fuzzer: mbarbella_js_mutation_layout
Job Type: linux_msan_content_shell_drt
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  blink::Font::canShapeWordByWord
  blink::CachingWordShaper::width
  blink::Font::width
  
Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_msan_content_shell_drt&range=399234:399406
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_msan_content_shell_drt&range=400850:400924

Minimized Testcase (0.28 Kb): https://cluster-fuzz.appspot.com/download/AMIfv97SaG-M6UGrS1agiG7l8NPq3vV85QXz5rnKt8_mQS7Zy4C-mDZ0UMvUDxYUVbo3DT9hlRx7MzedtUlIP1MLjHlRgFrId4LRFfM5kMa_C3XcYgXXAmKFaNSbEcG2Ywyh8J8r_Kukq73funnUwkZ74kmk1riHNA?testcase_id=5506881766555648

See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs 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, Jun 22 2016

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

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

Comment 8 by sheriffbot@chromium.org, Jun 22 2016

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

Comment 9 by ClusterFuzz, Jun 22 2016

Labels: Merge-NA
Labels: -ReleaseBlock-Beta -ClusterFuzz -merge-na Clusterfuzz Merge-na
Marked as fixed in M53.  Removing ReleaseBlock-Beta.
Project Member

Comment 11 by sheriffbot@chromium.org, Sep 28 2016

Labels: -Restrict-View-SecurityNotify
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
Project Member

Comment 12 by sheriffbot@chromium.org, Oct 1 2016

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
Project Member

Comment 13 by sheriffbot@chromium.org, Oct 2 2016

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
Labels: allpublic

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