OSV-2022-1209 Heap-buffer-overflow in OT::hb_ot_apply_context_t::skipping_iterator_t::next

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=53714 Crash type: Heap-buffer-overflow READ 4 Crash state: OT::hbotapplycontextt::skippingiteratort::next OT::Layout::GSUBimpl::Ligature::apply bool OT::hbacceleratesubtablescontextt::applytoOT::Layout::GSUBimpl::Liga...

harfbuzz:hb-shape-fuzzer: Heap-buffer-overflow in OT::hb_ot_apply_context_t::skipping_iterator_t::next

Project: https://github.com/harfbuzz/harfbuzz.git Detailed Report: https://oss-fuzz.com/testcase?key=5317682696421376 Project: harfbuzz Fuzzing Engine: afl Fuzz Target: hb-shape-fuzzer Job Type: aflasanharfbuzz Platform Id: linux Crash Type: Heap-buffer-overflow READ 4 Crash Address: 0x616000001b...

harfbuzz:hb-shape-fuzzer: Use-of-uninitialized-value in OT::hb_ot_apply_context_t::skipping_iterator_t::prev

Project: https://github.com/harfbuzz/harfbuzz.git Detailed Report: https://oss-fuzz.com/testcase?key=5349416110784512 Project: harfbuzz Fuzzing Engine: libFuzzer Fuzz Target: hb-shape-fuzzer Job Type: libfuzzermsanharfbuzz Platform Id: linux Crash Type: Use-of-uninitialized-value Crash Address:...