Status: New
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Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible
Engine-libfuzzer OS-Linux Proj-llvm Security_Severity-High Reported-2020-12-08
Type: Bug-Security
New issue 28411 by ClusterFuzz-External: llvm:llvm-isel-fuzzer--x86_64-O2:
Use-after-poison in llvm::SelectionDAG::getNode
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28411
Detailed Report: https://oss-fuzz.com/testcase?key=4861603086467072
Project: llvm
Fuzzing Engine: libFuzzer
Fuzz Target: llvm-isel-fuzzer--x86_64-O2
Job Type: libfuzzer_asan_llvm
Platform Id: linux
Crash Type: Use-after-poison READ 2
Crash Address: 0x62100004b1aa
Crash State:
llvm::SelectionDAG::getNode
llvm::SelectionDAG::getNode
DAGCombiner::visit
Sanitizer: address (ASAN)
Recommended Security Severity: High
Regressed:
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=202012060612:202012070611
Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=4861603086467072
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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stable releases.
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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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