This issue is a security regression. If you are not able to fix this quickly, please revert the change that introduced it.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

CL at https://pdfium-review.googlesource.com/3595

ClusterFuzz has detected this issue as fixed in range 461542:461575.

Detailed report: https://clusterfuzz.com/testcase?key=6646147398762496

Fuzzer: afl_pdf_fm2js_fuzzer
Job Type: afl_chrome_asan
Platform Id: linux

Crash Type: Heap-buffer-overflow READ 4
Crash Address: 0x60e000000240
Crash State:
  TryVSWPrintf
  CFX_WideString::FormatV
  CXFA_FMLexer::Error
  
Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=460921:460979
Fixed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=461542:461575

Reproducer Testcase: https://clusterfuzz.com/download/AMIfv97nH3903uU5MIVEoC_wR6j9cb7u2GTj0pkXm_o1t4T1LhobS3iYvj6oDfKLNGzHRlScyqk_dikPlhQ0D2jUys0NX4uPL1KWP3NlDvqReeaZx5cDsaCFgfQhOMXTGs1fNh5VJTLbnkS0RjA6Ru4OkofKZCVwIScmLdCXFGFvRl7tKs5V9_QpuhWiu4IjUtVPxBYOQhWEXXkkFNUTA2B1byWA_xmupFvON4PsBUCjY66RliDlFpHZ3sp_2JN7-vAdDVRklfXEs3wCRkf2L28f_O9yHtx7qxv89JarSFhXVRnjwrTfyoq7Zeo4JJbSAqtVRNhqzz7mV4jGw6wrBdIrgD1J3jgREWQMw7KFv-hWzwyPeh9_0XycQa_y9Oi00CmRvS2-rLUHvvaJUZvV-_8psb6K3XG-YA?testcase_id=6646147398762496


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

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

ClusterFuzz testcase 6646147398762496 is verified as fixed, so closing issue.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.

This bug has been closed for more than 14 weeks. Removing security view restrictions.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot