Status: New
Owner: ----
CC: [email protected], [email protected], [email protected],
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Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible
Engine-libfuzzer OS-Linux Proj-llvm Security_Severity-High
Reported-2020-01-13
Type: Bug-Security
New issue 20046 by ClusterFuzz-External: llvm:llvm-isel-fuzzer--wasm32-O2:
Heap-use-after-free in llvm::BasicBlock::getTerminator
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=20046
Detailed Report: https://oss-fuzz.com/testcase?key=5716633024987136
Project: llvm
Fuzzing Engine: libFuzzer
Fuzz Target: llvm-isel-fuzzer--wasm32-O2
Job Type: libfuzzer_asan_llvm
Platform Id: linux
Crash Type: Heap-use-after-free READ 8
Crash Address: 0x6060000074e8
Crash State:
llvm::BasicBlock::getTerminator
computeKnownBitsFromOperator
computeKnownBits
Sanitizer: address (ASAN)
Recommended Security Severity: High
Regressed:
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201912130427:201912200437
Reproducer Testcase:
https://oss-fuzz.com/download?testcase_id=5716633024987136
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
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