harfbuzz/hb-shape-fuzzer: Crash in BEInt<int, 4>::operator int

Type ossfuzz
Reporter Google
Modified 2018-11-15T16:24:48


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

Detailed report: https://oss-fuzz.com/testcase?key=5695615258853376

Project: harfbuzz Fuzzer: afl_harfbuzz_hb-shape-fuzzer Fuzz target binary: hb-shape-fuzzer Job Type: afl_asan_harfbuzz Platform Id: linux

Crash Type: UNKNOWN READ Crash Address: 0x611007dffdd5 Crash State: BEInt<int, 4>::operator int AAT::KerxSubTableFormat6::get_kerning hb_kern_machine_t<AAT::KerxSubTableFormat6::accelerator_t>::kern

Sanitizer: address (ASAN)

Recommended Security Severity: Medium

Regressed: https://oss-fuzz.com/revisions?job=afl_asan_harfbuzz&range=201810100144:201810110141

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5695615258853376

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.

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.