Status: New
Owner: ----
CC: k...@google.com, masc...@google.com, jdevlieg...@apple.com,
igm...@gmail.com, d...@google.com, mit...@google.com, bigchees...@gmail.com,
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Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible
Engine-libfuzzer OS-Linux Proj-llvm Security_Severity-High Reported-2020-06-08
Type: Bug-Security
New issue 23204 by ClusterFuzz-External: llvm:clang-fuzzer: Heap-use-after-free
in clang::Parser::isCXXDeclarationSpecifier
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=23204
Detailed Report: https://oss-fuzz.com/testcase?key=5732388020944896
Project: llvm
Fuzzing Engine: libFuzzer
Fuzz Target: clang-fuzzer
Job Type: libfuzzer_asan_llvm
Platform Id: linux
Crash Type: Heap-use-after-free READ 4
Crash Address: 0x6060000056e0
Crash State:
clang::Parser::isCXXDeclarationSpecifier
clang::Parser::isCXXSimpleDeclaration
clang::Parser::ParseStatementOrDeclarationAfterAttributes
Sanitizer: address (ASAN)
Recommended Security Severity: High
Regressed:
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=202004060250:202004070254
Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5732388020944896
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).
* state whether the bug was a short-lived regression or an old bug in any
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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