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Issue metadata

Status: Verified
Owner: ----
Closed: Aug 15
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Abrt in pdfium::span<unsigned char const>::operator

Project Member Reported by ClusterFuzz, Aug 15

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5170845727850496

Fuzzer: libFuzzer_pdfium_xfa_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Abrt
Crash Address: 0x05390000354c
Crash State:
  pdfium::span<unsigned char const>::operator
  CFX_ReadOnlyMemoryStream::ReadBlock
  CCodec_ProgressiveDecoder::JpegDetectImageType
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=582817:582826

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5170845727850496

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Aug 15

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 2 by ClusterFuzz, Aug 15

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

Move CPDFSDK_MemoryAccess to fxcrt. by thestig@chromium.org - https://pdfium.googlesource.com/pdfium/+/b850c987d141c5578535faba64d14782dbfc13da

Make CFX_ReadOnlyMemoryStream take a span. by thestig@chromium.org - https://pdfium.googlesource.com/pdfium/+/ed176992eb7ddbb0fee7b79625501df06f8ccf93

Use CFX_ReadOnlyMemoryStream in more places. by thestig@chromium.org - https://pdfium.googlesource.com/pdfium/+/30029419ad4b9e5cd382767a8645677afbeff7fd

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label.
Status: Fixed (was: Untriaged)
Already fixed with https://pdfium.googlesource.com/pdfium/+/88798cff29934b58e0a8d81e94005472d612b964 so just wait for CF to figure it out and verify the bug.
Project Member

Comment 4 by ClusterFuzz, Aug 15

ClusterFuzz has detected this issue as fixed in range 583133:583136.

Detailed report: https://clusterfuzz.com/testcase?key=5170845727850496

Fuzzer: libFuzzer_pdfium_xfa_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Abrt
Crash Address: 0x05390000354c
Crash State:
  pdfium::span<unsigned char const>::operator
  CFX_ReadOnlyMemoryStream::ReadBlock
  CCodec_ProgressiveDecoder::JpegDetectImageType
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=582817:582826
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=583133:583136

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5170845727850496

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.
Project Member

Comment 5 by ClusterFuzz, Aug 15

Labels: ClusterFuzz-Verified
Status: Verified (was: Fixed)
ClusterFuzz testcase 5170845727850496 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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