mruby:mruby_fuzzer: Crash in mrb_gc_mark

Project: https://github.com/mruby/mruby.git Detailed Report: https://oss-fuzz.com/testcase?key=4639047097057280 Project: mruby Fuzzing Engine: libFuzzer Fuzz Target: mrubyfuzzer Job Type: libfuzzerubsanmruby Platform Id: linux Crash Type: UNKNOWN WRITE Crash Address: 0x0000005a1110 Crash State:...

mruby:mruby_proto_fuzzer: Crash in mrb_gc_mark

Project: https://github.com/mruby/mruby.git Detailed Report: https://oss-fuzz.com/testcase?key=6110943596576768 Project: mruby Fuzzing Engine: libFuzzer Fuzz Target: mrubyprotofuzzer Job Type: libfuzzerubsanmruby Platform Id: linux Crash Type: UNKNOWN WRITE Crash Address: 0x000000848570 Crash...

OSV-2023-282 Heap-use-after-free in mrb_gc_mark

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=57703 Crash type: Heap-use-after-free READ 4 Crash state: mrbgcmark mrbgcmarkiv gcmarkchildren...

mruby:mruby_proto_fuzzer: Heap-use-after-free in mrb_gc_mark

Project: https://github.com/mruby/mruby.git Detailed Report: https://oss-fuzz.com/testcase?key=5068188005302272 Project: mruby Fuzzing Engine: libFuzzer Fuzz Target: mrubyprotofuzzer Job Type: libfuzzerasanmruby Platform Id: linux Crash Type: Heap-use-after-free READ 4 Crash Address: 0x62f0000444...

OSV-2023-176 Heap-use-after-free in mrb_gc_mark

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=56991 Crash type: Heap-use-after-free READ 4 Crash state: mrbgcmark mrbgcmarkiv gcmarkchildren...

mruby:mruby_proto_fuzzer: Heap-use-after-free in mrb_gc_mark

Project: https://github.com/mruby/mruby.git Detailed Report: https://oss-fuzz.com/testcase?key=5450442026123264 Project: mruby Fuzzing Engine: honggfuzz Fuzz Target: mrubyprotofuzzer Job Type: honggfuzzasanmruby Platform Id: linux Crash Type: Heap-use-after-free READ 4 Crash Address: 0x62f00001c5...

OSV-2023-118 Heap-use-after-free in mrb_gc_mark

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=56406 Crash type: Heap-use-after-free READ 4 Crash state: mrbgcmark mrbgcmarkiv gcmarkchildren...

mruby:mruby_proto_fuzzer: Heap-use-after-free in mrb_gc_mark

Project: https://github.com/mruby/mruby.git Detailed Report: https://oss-fuzz.com/testcase?key=5931151182397440 Project: mruby Fuzzing Engine: libFuzzer Fuzz Target: mrubyprotofuzzer Job Type: libfuzzerasanmruby Platform Id: linux Crash Type: Heap-use-after-free READ 4 Crash Address: 0x62f00001c5...

shopify-scripts: Memory corrouption in mrb_gc_mark

The memory corruption in mrbgcmark function can lead to code execution or at least DoS on mruby. PoC attached. Crash debug mr@minhrau $ ./mrubylatest/mruby/build/bench/bin/mruby ./mruby/fuzz03/crashes/mrbgcmark.rb Reading symbols from ./mrubylatest/mruby/build/bench/bin/mruby...done. gdb r...