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Issue 842529 link

Starred by 3 users

Issue metadata

Status: Verified
Owner:
Closed: May 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug-Regression

Blocking:
issue 62400



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Null-dereference READ in _IO_wdefault_xsputn

Project Member Reported by ClusterFuzz, May 13 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6217661340712960

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=555725:555734

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6217661340712960

Issue filed automatically.

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

Comment 1 by ClusterFuzz, May 13 2018

Cc: dsinclair@chromium.org
Labels: ClusterFuzz-Auto-CC
Automatically adding ccs based on OWNERS file / target commit history.

If this is incorrect, please add ClusterFuzz-Wrong label.
Cc: brajkumar@chromium.org
Components: Internals>Plugins>PDF
Labels: -Type-Bug M-68 Test-Predator-Wrong CF-NeedsTriage Type-Bug-Regression
> Predator was unable to identify any culprit changelists for this test case. 

> Unable to find actual suspect through code search and also observing no possible CL under regression range, hence requesting someone from pdf team to look in to it.

Thanks!
Owner: dsinclair@chromium.org
Status: Assigned (was: Untriaged)
No PDFium change in the range provided, I'm guessing this is a V8 issue. Dan, who do we route these to?
Blocking: 62400
Project Member

Comment 5 by ClusterFuzz, May 24 2018

ClusterFuzz has detected this issue as fixed in range 560951:561052.

Detailed report: https://clusterfuzz.com/testcase?key=6217661340712960

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=555725:555734
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=560951:561052

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6217661340712960

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 6 by ClusterFuzz, May 24 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 6217661340712960 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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