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/6211

ClusterFuzz has detected this issue as fixed in range 476516:476561.

Detailed report: https://clusterfuzz.com/testcase?key=4764985317392384

Fuzzer: libFuzzer_pdfium_xfa_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Bad-cast
Crash Address: 0x000005bdc4f0
Crash State:
  Bad-cast to CXFA_Object from CXFA_FM2JSContext
  CXFA_ScriptContext::ToObject
  CXFA_FM2JSContext::GetObjectDefaultValue
  
Sanitizer: undefined (UBSAN)

Recommended Security Severity: High

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=472713:472754
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=476516:476561

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4764985317392384


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.

Your change meets the bar and is auto-approved for M60. Please go ahead and merge the CL to branch 3112 manually. Please contact milestone owner if you have questions.
Owners: amineer@(Android), cmasso@(iOS), josafat@(ChromeOS), bustamante@(Desktop)

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

Wait, this is XFA. I don't think we care to merge this.

Ah, drat, I should have spotted that - sorry for the noise!

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