clemensh, could you please take a look at this, or assign it to the right person?

ClusterFuzz has detected this issue as fixed in range 413142:413297.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6309361133813760

Fuzzer: libfuzzer_v8_wasm_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Heap-buffer-overflow READ 1
Crash Address: 0x60600000e151
Crash State:
  unibrow::Utf8::CalculateValue
  ValueOf
  unibrow::Utf8::Validate
  
Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan&range=408652:408744
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan&range=413142:413297

Minimized Testcase (0.05 Kb): https://cluster-fuzz.appspot.com/download/AMIfv96tbxYbilGiLFMSUvEZQAsV4w5Gu9x5B2Z-viRFv5PxW8G2oUR9myKWKLdLaRjRUx4wDIed0mlfRpXDtKcjn-ZtdAAjRLYCHoh_H0CSnrC0_fng7LWoLFofeAvjaZD5YZKUBA8NZBSjoIofBf85z8G-5ETgNA?testcase_id=6309361133813760

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