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Null-dereference READ in _IO_wdefault_xsputn |
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Issue descriptionDetailed report: https://clusterfuzz.com/testcase?key=5562318130511872 Fuzzer: libFuzzer_pdfium_xfa_fuzzer Job Type: libfuzzer_chrome_ubsan Platform Id: linux Crash Type: Null-dereference READ Crash Address: 0x000000000000 Crash State: _IO_wdefault_xsputn vfwprintf vswprintf Sanitizer: undefined (UBSAN) Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=562400:562409 Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5562318130511872 Issue filed automatically. See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.
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May 30 2018
This issue looks similar to bug 842529 , hence assigning to the same owner for more updates. dsinclair@ Could you please take a look in to this issue? Thanks!
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May 30 2018
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May 31 2018
ClusterFuzz has detected this issue as fixed in range 563014:563041. Detailed report: https://clusterfuzz.com/testcase?key=5562318130511872 Fuzzer: libFuzzer_pdfium_xfa_fuzzer Job Type: libfuzzer_chrome_ubsan Platform Id: linux Crash Type: Null-dereference READ Crash Address: 0x000000000000 Crash State: _IO_wdefault_xsputn vfwprintf vswprintf Sanitizer: undefined (UBSAN) Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=562400:562409 Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=563014:563041 Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5562318130511872 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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May 31 2018
ClusterFuzz testcase 5562318130511872 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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May 31 2018
I suspect CF is being flaky and this will just crop up again as a different bug.
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Jun 11 2018
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Sep 4
Setting PDF bugs assigned to me back to untriaged so they can get re-assigned as needed.
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Sep 5
ClusterFuzz testcase 5562318130511872 appears to be flaky, updating reproducibility label.
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Sep 5
ClusterFuzz testcase 5562318130511872 is flaky and no longer crashes, so closing issue. If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue. |
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Comment 1 by ClusterFuzz
, May 30 2018Labels: ClusterFuzz-Auto-CC