binutils:fuzz_disassemble: Index-out-of-bounds in z8k_lookup_instr

2020-01-07T23:11:12
ID OSSFUZZ-19910
Type ossfuzz
Reporter Google
Modified 2020-02-08T18:11:34

Description

Detailed Report: https://oss-fuzz.com/testcase?key=5730446512226304

Project: binutils Fuzzing Engine: libFuzzer Fuzz Target: fuzz_disassemble Job Type: libfuzzer_ubsan_binutils Platform Id: linux

Crash Type: Index-out-of-bounds Crash Address: Crash State: z8k_lookup_instr print_insn_z8k fuzz_disassemble.c

Sanitizer: undefined (UBSAN)

Recommended Security Severity: Medium

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_ubsan_binutils&range=201912170318:201912190318

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5730446512226304

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.