unicorn/fuzz_emu_arm64_arm: Use-of-uninitialized-value in float64_squash_input_denormal_aarch64

2019-05-01T23:49:00
ID OSSFUZZ-14535
Type ossfuzz
Reporter Google
Modified 2019-06-01T15:25:53

Description

Project: https://github.com/unicorn-engine/unicorn.git

Detailed report: https://oss-fuzz.com/testcase?key=5681075289849856

Project: unicorn Fuzzer: libFuzzer_unicorn_fuzz_emu_arm64_arm Fuzz target binary: fuzz_emu_arm64_arm Job Type: libfuzzer_msan_unicorn Platform Id: linux

Crash Type: Use-of-uninitialized-value Crash Address: Crash State: float64_squash_input_denormal_aarch64 float64_to_float32_aarch64 helper_fcvtx_f64_to_f32_aarch64

Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_msan_unicorn&range=201905010225:201905011552

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5681075289849856

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.

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