[llvm-bugs] Issue 59755 in oss-fuzz: llvm:clang-fuzzer: Null-dereference WRITE in llvm::ConvertUTF8toWide

[ClusterFuzz-External via monorail via llvm-bugs]

Status: New
Owner: ----
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Labels: ClusterFuzz Reproducible Stability-Memory-MemorySanitizer Engine-libfuzzer OS-Linux Proj-llvm Reported-2023-06-11
Type: Bug

New issue 59755 by ClusterFuzz-External: llvm:clang-fuzzer: Null-dereference WRITE in llvm::ConvertUTF8toWide
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=59755

Detailed Report: https://oss-fuzz.com/testcase?key=4896023445897216

Project: llvm
Fuzzing Engine: libFuzzer
Fuzz Target: clang-fuzzer
Job Type: libfuzzer_msan_llvm
Platform Id: linux

Crash Type: Null-dereference WRITE
Crash Address: 0x00000000017e
Crash State:
  llvm::ConvertUTF8toWide
  clang::StringLiteralParser::CopyStringFragment
  clang::StringLiteralParser::init
  
Sanitizer: memory (MSAN)

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_msan_llvm&range=202205100603:202208130606

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=4896023445897216

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
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