[llvm-bugs] Issue 12897 in oss-fuzz: llvm/llvm-microsoft-demangle-fuzzer: Heap-buffer-overflow in llvm::ms_demangle::Node** llvm::ms_demangle::ArenaAllocator::allocArray

2019-04-06 Thread ClusterFuzz-External via monorail via llvm-bugs 

Updates:
Labels: ClusterFuzz-Verified
Status: Verified

Comment #7 on issue 12897 by ClusterFuzz-External:  
llvm/llvm-microsoft-demangle-fuzzer: Heap-buffer-overflow in  
llvm::ms_demangle::Node**  
llvm::ms_demangle::ArenaAllocator::allocArray
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12897#c7

ClusterFuzz testcase 5647811742269440 is verified as fixed, so closing  
issue as verified.


If this is incorrect, please file a bug on  
https://github.com/google/oss-fuzz/issues/new


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[llvm-bugs] Issue 12897 in oss-fuzz: llvm/llvm-microsoft-demangle-fuzzer: Heap-buffer-overflow in llvm::ms_demangle::Node** llvm::ms_demangle::ArenaAllocator::allocArray

2019-04-06 Thread ClusterFuzz-External via monorail via llvm-bugs 


Comment #6 on issue 12897 by ClusterFuzz-External:  
llvm/llvm-microsoft-demangle-fuzzer: Heap-buffer-overflow in  
llvm::ms_demangle::Node**  
llvm::ms_demangle::ArenaAllocator::allocArray
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12897#c6

ClusterFuzz has detected this issue as fixed in range  
201903270300:201904052014.


Detailed report: https://oss-fuzz.com/testcase?key=5647811742269440

Project: llvm
Fuzzer: libFuzzer_llvm_llvm-microsoft-demangle-fuzzer
Fuzz target binary: llvm-microsoft-demangle-fuzzer
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: Heap-buffer-overflow WRITE {*}
Crash Address: 0x62130900
Crash State:
  llvm::ms_demangle::Node**  
llvm::ms_demangle::ArenaAllocator::allocArray
  llvm::ms_demangle::Demangler::demangleArrayType
  llvm::ms_demangle::Demangler::demangleType

Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm=201901070410:201901080410
Fixed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm=201903270300:201904052014


Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5647811742269440


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


If you suspect that the result above is incorrect, try re-doing that job on  
the test case report page.


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[llvm-bugs] Issue 12897 in oss-fuzz: llvm/llvm-microsoft-demangle-fuzzer: Heap-buffer-overflow in llvm::ms_demangle::Node** llvm::ms_demangle::ArenaAllocator::allocArray

2019-04-03 Thread infe… via monorail via llvm-bugs 


Comment #5 on issue 12897 by infe...@chromium.org:  
llvm/llvm-microsoft-demangle-fuzzer: Heap-buffer-overflow in  
llvm::ms_demangle::Node**  
llvm::ms_demangle::ArenaAllocator::allocArray
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12897#c5

Can you try accessing it again.

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[llvm-bugs] Issue 12897 in oss-fuzz: llvm/llvm-microsoft-demangle-fuzzer: Heap-buffer-overflow in llvm::ms_demangle::Node** llvm::ms_demangle::ArenaAllocator::allocArray

2019-04-03 Thread tha… via monorail via llvm-bugs 


Comment #4 on issue 12897 by tha...@chromium.org:  
llvm/llvm-microsoft-demangle-fuzzer: Heap-buffer-overflow in  
llvm::ms_demangle::Node**  
llvm::ms_demangle::ArenaAllocator::allocArray
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12897#c4

https://reviews.llvm.org/D60202 fixes at least the repro case attached to  
this bug.


I don't have permissions to view  
https://oss-fuzz.com/testcase-detail/5647811742269440 so I can't check if  
other cases still trigger this.


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[llvm-bugs] Issue 12897 in oss-fuzz: llvm/llvm-microsoft-demangle-fuzzer: Heap-buffer-overflow in llvm::ms_demangle::Node** llvm::ms_demangle::ArenaAllocator::allocArray

2019-02-04 Thread ClusterFuzz-External via monorail via llvm-bugs 

Status: New
Owner: 
CC: k...@google.com, masc...@google.com, jdevlieg...@apple.com,  
igm...@gmail.com, eney...@google.com, llvm-b...@lists.llvm.org,  
j...@chromium.org, v...@apple.com, mitchphi...@outlook.com,  
xpl...@gmail.com, akils...@apple.com
Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible  
Engine-libfuzzer Proj-llvm Security_Severity-High Reported-2019-02-04

Type: Bug-Security

New issue 12897 by ClusterFuzz-External:  
llvm/llvm-microsoft-demangle-fuzzer: Heap-buffer-overflow in  
llvm::ms_demangle::Node**  
llvm::ms_demangle::ArenaAllocator::allocArray
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12897

Detailed report: https://oss-fuzz.com/testcase?key=5647811742269440

Project: llvm
Fuzzer: libFuzzer_llvm_llvm-microsoft-demangle-fuzzer
Fuzz target binary: llvm-microsoft-demangle-fuzzer
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: Heap-buffer-overflow WRITE {*}
Crash Address: 0x62130900
Crash State:
  llvm::ms_demangle::Node**  
llvm::ms_demangle::ArenaAllocator::allocArray
  llvm::ms_demangle::Demangler::demangleArrayType
  llvm::ms_demangle::Demangler::demangleType

Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm=201901070410:201901080410


Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5647811742269440


Issue filed automatically.

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

  * add any other useful information.
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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