capstone/fuzz_disasmnext: Crash in fuzz_disasm.c

2019-02-07T09:38:21
ID OSSFUZZ-12959
Type ossfuzz
Reporter Google
Modified 2019-03-10T15:23:46

Description

Detailed report: https://oss-fuzz.com/testcase?key=5688575243321344

Project: capstone Fuzzer: libFuzzer_capstone_fuzz_disasmnext Fuzz target binary: fuzz_disasmnext Job Type: libfuzzer_msan_capstone Platform Id: linux

Crash Type: UNKNOWN READ Crash Address: 0x0000000a2e58 Crash State: fuzz_disasm.c

Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_msan_capstone&range=201902060437:201902070436

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5688575243321344

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.

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.

If you need to contact the OSS-Fuzz team with a question, concern, or any other feedback, please file an issue at https://github.com/google/oss-fuzz/issues.