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

If this doesn't affect a release branch, or has not been properly classified for severity, please update the Security_Impact or Security_Severity labels, and remove the ReleaseBlock label. To disable this altogether, apply ReleaseBlock-NA.

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

ClusterFuzz has detected this issue as fixed in range 493954:493968.

Detailed report: https://clusterfuzz.com/testcase?key=5514649318719488

Fuzzer: libFuzzer_pdf_cfx_barcode_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Heap-buffer-overflow READ 4
Crash Address: 0x605000001a0c
Crash State:
  CFX_WideString::GetAt
  CBC_C40Encoder::BacktrackOneCharacter
  CBC_C40Encoder::Encode
  
Sanitizer: address (ASAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=491651:491687
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=493954:493968

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5514649318719488

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.

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