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Issue metadata

Status: Verified
Owner:
Closed: Jun 2017
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Mac
Pri: 1
Type: Bug



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Null-dereference READ in blink::RootInlineBox::ClosestLeafChildForLogicalLeftPosition

Project Member Reported by ClusterFuzz, May 23 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6142819902423040

Fuzzer: inferno_layout_test_unmodified
Job Type: mac_asan_content_shell
Platform Id: mac

Crash Type: Null-dereference READ
Crash Address: 0x00000000003d
Crash State:
  blink::RootInlineBox::ClosestLeafChildForLogicalLeftPosition
  blink::NextLinePosition
  blink::SelectionModifier::ModifyMovingForward
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=mac_asan_content_shell&range=434178:434216

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6142819902423040


Issue filed automatically.

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

Comment 1 by ClusterFuzz, May 26 2017

Labels: OS-Linux
Components: Blink>Layout

Comment 3 by e...@chromium.org, Jun 16 2017

Owner: kojii@chromium.org
Status: Assigned (was: Untriaged)
Project Member

Comment 4 by ClusterFuzz, Jun 20 2017

ClusterFuzz has detected this issue as fixed in range 479886:479921.

Detailed report: https://clusterfuzz.com/testcase?key=6142819902423040

Fuzzer: inferno_layout_test_unmodified
Job Type: mac_asan_content_shell
Platform Id: mac

Crash Type: Null-dereference READ
Crash Address: 0x00000000003d
Crash State:
  blink::RootInlineBox::ClosestLeafChildForLogicalLeftPosition
  blink::NextLinePosition
  blink::SelectionModifier::ModifyMovingForward
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=mac_asan_content_shell&range=434178:434216
Fixed: https://clusterfuzz.com/revisions?job=mac_asan_content_shell&range=479886:479921

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6142819902423040


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 5 by ClusterFuzz, Jun 20 2017

ClusterFuzz has detected this issue as fixed in range 479886:479921.

Detailed report: https://clusterfuzz.com/testcase?key=6142819902423040

Fuzzer: inferno_layout_test_unmodified
Job Type: mac_asan_content_shell
Platform Id: mac

Crash Type: Null-dereference READ
Crash Address: 0x00000000003d
Crash State:
  blink::RootInlineBox::ClosestLeafChildForLogicalLeftPosition
  blink::NextLinePosition
  blink::SelectionModifier::ModifyMovingForward
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=mac_asan_content_shell&range=434178:434216
Fixed: https://clusterfuzz.com/revisions?job=mac_asan_content_shell&range=479886:479921

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6142819902423040


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 6 by ClusterFuzz, Jun 20 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 6142819902423040 is verified as fixed, so closing issue.

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

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