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

jochen@, can you take a look at this or assign it to someone who can? Thanks.

ClusterFuzz has detected this issue as fixed in range 433116:433270.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5636918202335232

Fuzzer: libfuzzer_v8_wasm_imports_section_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  unibrow::Utf8::CalculateValue
  unibrow::Utf8::ValueOf
  unibrow::Utf8::Validate
  
Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=432810:432851
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=433116:433270

Minimized Testcase (0.02 Kb): https://cluster-fuzz.appspot.com/download/AMIfv95jZZTr6cY40UzCslNDgZ7hG7pqKR_eiWzbqt-WqvZzT93K5sgvFGUBGGdxz6tjwOK72VM2zU_4g2avYX-xZqdrFwuh9uckPMGztcqKMN0_hMYUr2X2FaAYY4y9H-tTfUH0oRdoF7Vc5QnFhDRYr0hDUxKAsA?testcase_id=5636918202335232

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 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