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Issue metadata

Status: Verified
Owner: ----
Closed: Jun 2018
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Null-dereference READ in bool scoped_refptr<blink::ComputedStyle>::operator==<blink::ComputedStyle>

Project Member Reported by ClusterFuzz, Jun 16 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5246784683900928

Fuzzer: attekett_dom_fuzzer
Job Type: linux_cfi_chrome
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000018
Crash State:
  bool scoped_refptr<blink::ComputedStyle>::operator==<blink::ComputedStyle>
  blink::LayoutObject::SetStyle
  blink::FirstLetterPseudoElement::AttachFirstLetterTextLayoutObjects
  
Sanitizer: cfi (CFI)

Regressed: https://clusterfuzz.com/revisions?job=linux_cfi_chrome&range=567604:567614

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5246784683900928

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Jun 19 2018

ClusterFuzz has detected this issue as fixed in range 567985:568010.

Detailed report: https://clusterfuzz.com/testcase?key=5246784683900928

Fuzzer: attekett_dom_fuzzer
Job Type: linux_cfi_chrome
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000018
Crash State:
  bool scoped_refptr<blink::ComputedStyle>::operator==<blink::ComputedStyle>
  blink::LayoutObject::SetStyle
  blink::FirstLetterPseudoElement::AttachFirstLetterTextLayoutObjects
  
Sanitizer: cfi (CFI)

Regressed: https://clusterfuzz.com/revisions?job=linux_cfi_chrome&range=567604:567614
Fixed: https://clusterfuzz.com/revisions?job=linux_cfi_chrome&range=567985:568010

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5246784683900928

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 2 by ClusterFuzz, Jun 19 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Untriaged)
ClusterFuzz testcase 5246784683900928 is verified as fixed, so closing issue as verified.

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

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