njs:njs_process_script_fuzzer: Bad-cast to njs_value_t' (aka 'union njs_value_s')njs_vmcode_interpreter in njs_function_lambda_call

2020-06-10T03:06:37
ID OSSFUZZ-23258
Type ossfuzz
Reporter Google
Modified 2020-09-08T19:59:12

Description

Detailed Report: https://oss-fuzz.com/testcase?key=4779964628205568

Project: njs Fuzzing Engine: libFuzzer Fuzz Target: njs_process_script_fuzzer Job Type: libfuzzer_ubsan_njs Platform Id: linux

Crash Type: Bad-cast Crash Address: 0x000002b16660 Crash State: Bad-cast to njs_value_t' (aka 'union njs_value_s')njs_vmcode_interpreter njs_function_lambda_call njs_vmcode_interpreter

Sanitizer: undefined (UBSAN)

Recommended Security Severity: High

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_ubsan_njs&range=202005130258:202005140658

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=4779964628205568

Issue filed automatically.

See https://google.github.io/oss-fuzz/advanced-topics/reproducing for instructions to reproduce this bug locally. When you fix this bug, please * mention the fix revision(s). * state whether the bug was a short-lived regression or an old bug in any stable releases. * add any other useful information. This information can help downstream consumers.

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This bug is subject to a 90 day disclosure deadline. If 90 days elapse without an upstream patch, then the bug report will automatically become visible to the public.