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

A friendly reminder that M57 Beta launch is coming soon on February 2nd! Your bug is labelled as Beta ReleaseBlock, pls make sure to land the fix and get it merged into the release branch (2987) ASAP so it gets enough baking time in Dev (before Beta promotion). Thank you!

bradnelson@: Based on the stack trace, it seems you know about relevant parts of webasm; could you help triage this bug?

ClusterFuzz has detected this issue as fixed in range 445054:445058.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5147970388623360

Fuzzer: mbarbella_js_mutation
Job Type: windows_asan_d8
Platform Id: windows

Crash Type: UNKNOWN READ
Crash Address: 0x18686000
Crash State:
  v8::internal::String::ToCString
  v8::internal::String::ToCString
  v8::internal::wasm::AsmTyper::ImportLookup
  
Sanitizer: address (ASAN)

Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=windows_asan_d8&range=444758:444799
Fixed: https://cluster-fuzz.appspot.com/revisions?job=windows_asan_d8&range=445054:445058

Minimized Testcase (0.08 Kb):
Download: https://cluster-fuzz.appspot.com/download/AMIfv96jneSlL_pu0Mxh49d5hA1QtJW24StPtwFw7Dw0EKcJKte--c1CMojjZEyvEUzJ8zp54lPk26YB93SKDH4ShVUVc7JR_ySo-QyDN2rhWZaLh9dM1-mP-lJWkse06s6hC5AJyts3DQgIGYbtUEBMteKq7PCy98ezH_hZ2Ayghmq0vg_51nDgKJuDmOXNx2jycYGVodx7WM7b0dmkn8czkYuoPGl8-rDpsljxs3-SYlmSU3PubdExlW-qDHHaItCvl4NwkYzOyK8RmTHK9CUcmUahFzQHEGXsVdZdKJ201WzwZ1RNC8fDFPw3NeeTGKIzIWckT5ZaLp6SAcFTvN8n4mmruacEEhiyFv1eYFSa2HAASaJI7wc?testcase_id=5147970388623360
var __f_4 = (function(stdlib) {
  "use asm";
  var __v_5 = (stdlib[-2147483648]);
})();


See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs 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