icu/collator_rulebased_fuzzer: Use-of-uninitialized-value in isMatchAtCPBoundary

2019-06-26T14:49:54
ID OSSFUZZ-15505
Type ossfuzz
Reporter Google
Modified 2020-07-22T18:06:22

Description

Project: https://github.com/unicode-org/icu.git

Detailed report: https://oss-fuzz.com/testcase?key=5644492876546048

Project: icu Fuzzer: libFuzzer_icu_collator_rulebased_fuzzer Fuzz target binary: collator_rulebased_fuzzer Job Type: libfuzzer_msan_icu Platform Id: linux

Crash Type: Use-of-uninitialized-value Crash Address: Crash State: isMatchAtCPBoundary u_strFindFirst_64 icu_64::UnicodeString::indexOf

Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_msan_icu&range=201906250235:201906260234

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5644492876546048

Issue filed automatically.

See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md for instructions to reproduce this bug locally.

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.