[llvm-bugs] Issue 16319 in oss-fuzz: llvm:llvm-dwarfdump-fuzzer: Heap-buffer-overflow in llvm::DWARFFormValue::dump

[ClusterFuzz-External via monorail via llvm-bugs]

Status: New
Owner: ----
CC: kcc at google.com, mascasa at google.com, jdevlieg... at apple.com,  
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eneyman at google.com, llvm-b... at lists.llvm.org, jfb at chromium.org,  
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Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible  
Engine-libfuzzer OS-Linux Proj-llvm Security_Severity-Medium  
Reported-2019-08-09
Type: Bug-Security

New issue 16319 by ClusterFuzz-External: llvm:llvm-dwarfdump-fuzzer:  
Heap-buffer-overflow in llvm::DWARFFormValue::dump
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16319

Detailed report: https://oss-fuzz.com/testcase?key=5629811638140928

Project: llvm
Fuzzing engine: libFuzzer
Fuzz target: llvm-dwarfdump-fuzzer
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: Heap-buffer-overflow READ 1
Crash Address: 0x619000001dd0
Crash State:
   llvm::DWARFFormValue::dump
   llvm::DWARFDebugLine::Prologue::dump
   llvm::DWARFDebugLine::LineTable::dump

Sanitizer: address (ASAN)

Recommended Security Severity: Medium

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201805100547:201805110701

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5629811638140928

Issue filed automatically.

See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md for  
instructions to reproduce this bug locally.

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