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Issue 845801 link

Starred by 1 user
Status: Duplicate
Merged: issue 845800
Owner: ----
Closed: May 2018
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug



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Integer-overflow in CPDF_Type3Cache::RenderGlyph

Project Member Reported by ClusterFuzz, May 23 2018 
Detailed report: https://clusterfuzz.com/testcase?key=4770311866941440

Fuzzer: libFuzzer_pdfium_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  CPDF_Type3Cache::RenderGlyph
  CPDF_Type3Cache::LoadGlyph
  CPDF_RenderStatus::ProcessType3Text
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=479170:479259

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4770311866941440

Issue filed automatically.

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

Comment 1 by brajkumar@chromium.org, May 23 2018

Mergedinto: 845800
Status: Duplicate (was: Untriaged)
This issue looks similar to  bug 845800 , hence merging in to it. Feel free to undupe if it's a different issue.

Thanks!
Project Member

Comment 2 by ClusterFuzz, Jul 7 

ClusterFuzz has detected this issue as fixed in range 572608:573019.

Detailed report: https://clusterfuzz.com/testcase?key=4770311866941440

Fuzzer: libFuzzer_pdfium_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  CPDF_Type3Cache::RenderGlyph
  CPDF_Type3Cache::LoadGlyph
  CPDF_RenderStatus::ProcessType3Text
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=479170:479259
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=572608:573019

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4770311866941440

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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