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

dsinclair: this is a crash in the pdfium code found through fuzzing (XFACodecFuzzer). Could you please help triage? Thanks!

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

XFA is not enabled on any branch of chromium.

ClusterFuzz has detected this issue as fixed in range 453290:453318.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6070247976337408

Fuzzer: libfuzzer_pdf_codec_gif_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: Heap-buffer-overflow WRITE 1
Crash Address: 0x62a000005232
Crash State:
  CGifLZWDecoder::ClearTable
  CGifLZWDecoder::InitTable
  gif_load_frame
  
Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan_debug&range=400732:400874
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan_debug&range=453290:453318

Reproducer Testcase: https://cluster-fuzz.appspot.com/download/AMIfv96NJ60X2f0W8vhOa-fXl0UTcBNc3mQ6HvPy-auH9oyBT4aDUzW9KNX9ZVKxwbvflSJJ9STeIRqONcJxmtv9vLdMb5MeLETpEf6-seIbyEDQzPxLS773qHX2hZSV5z1ErbAG8n3th2Sf50X1mSbKcETQKuiT8-e3FwqyGCueGmlTVvHG_su6XFvOfyARFW5XikrxUkA-A6E2E2Kgy7aFdcULDvPtDJyrEYdbtOg1TgGPnXVntfaw0_LAL1csajvFNPbDVTVvRhs8hzb36C6olLOwylIeJIbrJhuGZKKrEkWqkr_-3GbxBmhNr0J7OEIYYZ4_F44JykNh9bO0I_3ZGkFuQF5E2qQARNIt0GvO67tyT4rBXjylDikhH9TTAiUrRiIrftHyxjqQ01sv6LM5mhHkRZRyYQ?testcase_id=6070247976337408


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 6070247976337408 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