Status: New
Owner: ----
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Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible
Engine-libfuzzer OS-Linux Proj-llvm Security_Severity-High Reported-2020-08-11
Type: Bug-Security
New issue 24828 by ClusterFuzz-External:
llvm:llvm-opt-fuzzer--x86_64-guard_widening: Heap-use-after-free in
llvm::Value::setNameImpl
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24828
Detailed Report: https://oss-fuzz.com/testcase?key=5166633690333184
Project: llvm
Fuzzing Engine: libFuzzer
Fuzz Target: llvm-opt-fuzzer--x86_64-guard_widening
Job Type: libfuzzer_asan_llvm
Platform Id: linux
Crash Type: Heap-use-after-free READ 3
Crash Address: 0x60400000d7f0
Crash State:
llvm::Value::setNameImpl
llvm::Value::setName
llvm::UpgradeIntrinsicCall
Sanitizer: address (ASAN)
Recommended Security Severity: High
Regressed:
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=202008100615:202008110602
Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5166633690333184
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
* mention the fix revision(s).
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feedback, please file an issue at https://github.com/google/oss-fuzz/issues.
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