Status: New
Owner: ----
CC: k...@google.com, masc...@google.com, jdevlieg...@apple.com,
igm...@gmail.com, llvm-b...@lists.llvm.org, v...@apple.com,
mitchphi...@outlook.com, akils...@apple.com
Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible
Engine-libfuzzer Proj-llvm Reported-2018-01-05
Type: Bug-Security
New issue 4985 by ClusterFuzz-External: llvm/clang-fuzzer:
Heap-use-after-free in clang::APValue::swap
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4985
Detailed report: https://oss-fuzz.com/testcase?key=6747068086353920
Project: llvm
Fuzzer: libFuzzer_llvm_clang-fuzzer
Fuzz target binary: clang-fuzzer
Job Type: libfuzzer_asan_llvm
Platform Id: linux
Crash Type: Heap-use-after-free READ 4
Crash Address: 0x6070000044d0
Crash State:
clang::APValue::swap
IntExprEvaluator::Success
IntExprEvaluator::VisitCastExpr
Sanitizer: address (ASAN)
Recommended Security Severity: High
Regressed:
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201712090607:201712100011
Reproducer Testcase:
https://oss-fuzz.com/download?testcase_id=6747068086353920
Issue filed automatically.
See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md for
more information.
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 have questions for the OSS-Fuzz team, please file an issue at
https://github.com/google/oss-fuzz/issues.
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