[llvm-bugs] Issue 3867 in oss-fuzz: llvm/clangd-fuzzer: Use-after-poison in llvm::yaml::Scanner::scanValue

monor… via monorail via llvm-bugs llvm-bugs at lists.llvm.org
Sat Oct 28 04:09:25 PDT 2017

Status: New
Owner: ----
CC: kcc at google.com,  mascasa at google.com,  jdevlieg... at apple.com,   
llvm-b... at lists.llvm.org,  v... at apple.com
Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible  
Engine-libfuzzer Proj-llvm Reported-2017-10-28

New issue 3867 by monor... at clusterfuzz-external.iam.gserviceaccount.com:  
llvm/clangd-fuzzer: Use-after-poison in llvm::yaml::Scanner::scanValue

Detailed report: https://oss-fuzz.com/testcase?key=4553604959567872

Project: llvm
Fuzzer: libFuzzer_llvm_clangd-fuzzer
Fuzz target binary: clangd-fuzzer
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: Use-after-poison READ 8
Crash Address: 0x6210000029f0
Crash State:

Sanitizer: address (ASAN)

Recommended Security Severity: High


Reproducer Testcase:  

Issue filed automatically.

See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md for  
more information.

When you fix this bug, please
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