file: Use-of-uninitialized-value in mcopy

2017-04-05T00:51:15
ID OSSFUZZ-993
Type ossfuzz
Reporter Google
Modified 2017-05-23T13:04:21

Description

Project: https://github.com/file/file.git

Detailed report: https://oss-fuzz.com/testcase?key=6069128647409664

Project: file Fuzzer: libFuzzer_file_magic_fuzzer Fuzz target binary: magic_fuzzer Job Type: libfuzzer_msan_file Platform Id: linux

Crash Type: Use-of-uninitialized-value Crash Address: Crash State: mcopy mget match

Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Reproducer Testcase: https://oss-fuzz.com/download/AMIfv94lyVXyPsp_W7AUAI_cwrCPbwGbfjmywUJYNXXRsz9OCmEBAbiAKJLGuIm8qmUjCOXOzrF9w_1EXgqanL800KSeRM3IPlN4Ftv0nNTWGEDo640yhUw_gc1_o0_5DcwImNGkYJAynaCXOQgJjRmNFG4QPa770nNZJ-D012Ktm3SHd2LApBjpWGOicA8i8YPC_aqNsxGpEl7dyk4qxJBEeQ6JjBJHV6-nLmP4a7fy-F3Emg-522wrjvNshlyu5BUt8g8FgbXJ3qIzvOy0NFQCxRIdopyDoD5wLIQ76HhLszsvCLJkxCAGE667t0v9O-GvDPjIyZ7GA8shf2NqoOOZ78Ve7v34NTLAUTC7tRJB4V0Qiisj6AuMskgiCHiS1FYXVcZXjIeRxOXtf6fu7Ljse5or0jreh9Ht_fPhAbqsKTZcohSpUzs?testcase_id=6069128647409664

Issue filed automatically.

See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md for more information.

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.