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

Can you take a look at this or route it someone who can? Thanks.

Related to https://bugs.chromium.org/p/chromium/issues/detail?id=667260 ?

Probably the same issue, yes. I'll have ClusterFuzz verify that it's fixed, now that the fix has landed.

ClusterFuzz has detected this issue as fixed in range 433838:433865.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4991285900607488

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=433457:433461
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=433838:433865

Minimized Testcase (0.10 Kb):
Download: https://cluster-fuzz.appspot.com/download/AMIfv948aYfc3qRVKC1Tj6o0h8V4AKzh7qGimjEHFOXW_-FYlGdjp2ZCC2sC4DcHmFG4D1bjIJmktEihzQxEpnhh-frZy94O8PXHFsVErIsAIvfodDXW_0AiEvW85oXcN6y4OneA4dn9yoQsUgbt6Prq3Mz0n1m1Yg?testcase_id=4991285900607488
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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.

Yup, same issue, fixed.

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