Status: New
Owner: ----
CC: [email protected], [email protected], [email protected],
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Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible
Engine-libfuzzer Proj-llvm Security_Severity-High Reported-2019-06-17
Type: Bug-Security
New issue 15323 by ClusterFuzz-External: llvm/llvm-isel-fuzzer--aarch64-O2:
Heap-use-after-free in CodeGenPrepare::optimizeInst
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15323
Detailed report: https://oss-fuzz.com/testcase?key=5676435362021376
Project: llvm
Fuzzer: libFuzzer_llvm_llvm-isel-fuzzer--aarch64-O2
Fuzz target binary: llvm-isel-fuzzer--aarch64-O2
Job Type: libfuzzer_asan_llvm
Platform Id: linux
Crash Type: Heap-use-after-free READ 1
Crash Address: 0x60b000000130
Crash State:
CodeGenPrepare::optimizeInst
CodeGenPrepare::runOnFunction
llvm::FPPassManager::runOnFunction
Sanitizer: address (ASAN)
Recommended Security Severity: High
Regressed:
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201906160252:201906170258
Reproducer Testcase:
https://oss-fuzz.com/download?testcase_id=5676435362021376
Issue filed automatically.
See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md 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.
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.
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