Hi PDF folks - this looks like it's in the libjpeg / libtiff libraries called from PDF. Can you take a look please?

dsinclair: Uh oh! This issue still open and hasn't been updated in the last 14 days. This is a serious vulnerability, and we want to ensure that there's progress. Could you please leave an update with the current status and any potential blockers?

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If the issue is fixed or you can't reproduce it, please close the bug. If you've started working on a fix, please set the status to Started.

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Looks like an XFA issue, so would not effect any branch of Chromium.

ClusterFuzz has detected this issue as fixed in range 443057:443122.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5677559556866048

Fuzzer: libfuzzer_pdf_codec_tiff_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  decode_mcu_fast
  decode_mcu
  decompress_onepass
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=443057:443122

Minimized Testcase (0.52 Kb): https://cluster-fuzz.appspot.com/download/AMIfv94GSdGB-E0H-xjpe88xh36BbhnuBv9Tn8ZDWGx7mbZYHPHK4GCSTWkuVI2BMU_A13Rq2Fo_3-c7VOAiqAA06dxK--EHbHj14C33OVNFBBAlTdyezAXkqu2KQ7csN4JSOdxozFRRHcXASQrpSe5MrhwfDGWOhQ?testcase_id=5677559556866048

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 5677559556866048 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