tsepez: This looks very similar to 649206. Can you have a look and duplicate if appropriate?

ClusterFuzz has detected this issue as fixed in range 420630:420810.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6395102299947008

Fuzzer: lszekeres_pdf_small
Job Type: linux_asan_pdfium
Platform Id: linux

Crash Type: Heap-use-after-free READ 8
Crash Address: 0x604000001468
Crash State:
  CPDF_ViewerPreferences::IsDirectionR2L
  FPDFText_LoadPage
  RenderPage
  
Recommended Security Severity: High

Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_asan_pdfium&range=419848:419971
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_asan_pdfium&range=420630:420810

Minimized Testcase (13.41 Kb): https://cluster-fuzz.appspot.com/download/AMIfv94gzOHYssjP0yfv3p-Kwifd9AKqlTgktheuVjTRx7paWLC9vAEZ5phoiERFoDtj-lFHy9ojfkoAl87c1V_NJMSAL5sKc9MlNH4H1L0FRLTUM1H5xkJD0D4oK6JYr71w304ojrKIfh6vxgTMlSFVq1dNAoYlSA?testcase_id=6395102299947008

See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.

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

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

ClusterFuzz testcase is verified as fixed, 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