CF is suggesting https://pdfium.googlesource.com/pdfium.git/+/d0409afc6a994a3e24043b8a96c83c022bcaa189 as a potential regression cause.

UnownedPtr::Probe => low serverity.

CL at https://pdfium-review.googlesource.com/6072

ClusterFuzz has detected this issue as fixed in range 475134:475164.

Detailed report: https://clusterfuzz.com/testcase?key=4720239408578560

Fuzzer: corpus_builder_pdf
Job Type: linux_asan_pdfium
Platform Id: linux

Crash Type: Heap-use-after-free READ 1
Crash Address: 0x606000012080
Crash State:
  CPDF_ShadingPattern::~CPDF_ShadingPattern
  CPDF_ShadingPattern::~CPDF_ShadingPattern
  CPDF_Color::~CPDF_Color
  
Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_pdfium&range=474952:474976
Fixed: https://clusterfuzz.com/revisions?job=linux_asan_pdfium&range=475134:475164

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4720239408578560


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.

ClusterFuzz testcase 4720239408578560 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