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Issue metadata

Status: Duplicate
Merged: issue 819509
Owner: ----
Closed: Mar 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Mac
Pri: 1
Type: Bug



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Null-dereference READ in CXFA_FMIfExpression::ToJavaScript

Project Member Reported by ClusterFuzz, Mar 8 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=4918752291061760

Fuzzer: afl_pdf_fm2js_fuzzer
Job Type: afl_chrome_asan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  CXFA_FMIfExpression::ToJavaScript
  CXFA_FMIfExpression::ToJavaScript
  CXFA_FMBlockExpression::ToJavaScript
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=540988:541003

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4918752291061760

Issue filed automatically.

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.
 
Project Member

Comment 1 by ClusterFuzz, Mar 8 2018

Labels: OS-Mac
Project Member

Comment 2 by ClusterFuzz, Mar 8 2018

Components: Internals>Plugins>PDF
Labels: Test-Predator-Auto-Components
Automatically applying components based on crash stacktrace and information from OWNERS files.

If this is incorrect, please apply the Test-Predator-Wrong-Components label.
Project Member

Comment 3 by ClusterFuzz, Mar 8 2018

Cc: dsinclair@chromium.org
Labels: Test-Predator-Auto-CC
Automatically adding ccs based on suspected regression changelists:

[formcalc] Cleanup m_error handling by dsinclair@chromium.org - https://pdfium.googlesource.com/pdfium/+/406b23d9350777514e499cefdc080212de596e8d

[formcalc] Simplify function signature parsing by dsinclair@chromium.org - https://pdfium.googlesource.com/pdfium/+/f3be555096b0b64917d27578e51c9e6c7d9c7083

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label.
Mergedinto: 819509
Status: Duplicate (was: Untriaged)
Project Member

Comment 5 by ClusterFuzz, Mar 8 2018

ClusterFuzz has detected this issue as fixed in range 541534:541559.

Detailed report: https://clusterfuzz.com/testcase?key=4918752291061760

Fuzzer: afl_pdf_fm2js_fuzzer
Job Type: afl_chrome_asan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  CXFA_FMIfExpression::ToJavaScript
  CXFA_FMIfExpression::ToJavaScript
  CXFA_FMBlockExpression::ToJavaScript
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=540988:541003
Fixed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=541534:541559

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4918752291061760

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.

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