llvm:clang-fuzzer: Heap-use-after-free in clang::Parser::isCXXDeclarationSpecifier

2020-06-08T16:50:39
ID OSSFUZZ-23204
Type ossfuzz
Reporter Google
Modified 2020-09-01T19:55:19

Description

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.

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