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List: llvm-bugs
Subject: [llvm-bugs] Issue 19182 in oss-fuzz: llvm:clang-fuzzer: Segv on unknown address in clang::Sema::ActO
From: ClusterFuzz-External via monorail via llvm-bugs <llvm-bugs () lists ! llvm ! org>
Date: 2019-11-29 21:56:35
Message-ID: 000000000000b1db990598834dc1 () google ! com
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Status: New
Owner: ----
CC: kcc@google.com, mascasa@google.com, jdevlieg...@apple.com,
igm...@gmail.com, davg@google.com, mitchp@google.com,
bigchees...@gmail.com, eneyman@google.com, llvm-b...@lists.llvm.org,
jfb@chromium.org, v...@apple.com, mitchphi...@outlook.com,
xpl...@gmail.com, akils...@apple.com
Labels: ClusterFuzz Reproducible Stability-Memory-MemorySanitizer
Engine-libfuzzer OS-Linux Proj-llvm Security_Severity-High
Reported-2019-11-29
Type: Bug-Security
New issue 19182 by ClusterFuzz-External: llvm:clang-fuzzer: Segv on unknown
address in clang::Sema::ActOnTag
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19182
Detailed Report: https://oss-fuzz.com/testcase?key=5715582179868672
Project: llvm
Fuzzing Engine: libFuzzer
Fuzz Target: clang-fuzzer
Job Type: libfuzzer_msan_llvm
Platform Id: linux
Crash Type: Segv on unknown address
Crash Address:
Crash State:
clang::Sema::ActOnTag
clang::Parser::ParseEnumSpecifier
clang::Parser::ParseDeclarationSpecifiers
Sanitizer: memory (MSAN)
Regressed:
https://oss-fuzz.com/revisions?job=libfuzzer_msan_llvm&range=201911200438:201911230451
Reproducer Testcase:
https://oss-fuzz.com/download?testcase_id=5715582179868672
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
* 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. Comments on individual Monorail
issues are not monitored.
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<div style="font-family: arial, sans-serif; white-space:pre">Status: New<br/>Owner: \
----<br/>CC: <a href="mailto:kcc@google.com">kcc@google.com</a>, <a \
href="mailto:mascasa@google.com">mascasa@google.com</a>, jdevlieg...@<a \
href="http://apple.com">apple.com</a>, igm...@<a \
href="http://gmail.com">gmail.com</a>, <a \
href="mailto:davg@google.com">davg@google.com</a>, <a \
href="mailto:mitchp@google.com">mitchp@google.com</a>, bigchees...@<a \
href="http://gmail.com">gmail.com</a>, <a \
href="mailto:eneyman@google.com">eneyman@google.com</a>, llvm-b...@<a \
href="http://lists.llvm.org">lists.llvm.org</a>, <a \
href="mailto:jfb@chromium.org">jfb@chromium.org</a>, v...@<a \
href="http://apple.com">apple.com</a>, mitchphi...@<a \
href="http://outlook.com">outlook.com</a>, xpl...@<a \
href="http://gmail.com">gmail.com</a>, akils...@<a \
href="http://apple.com">apple.com</a> <br/>Labels: ClusterFuzz Reproducible \
Stability-Memory-MemorySanitizer Engine-libfuzzer OS-Linux Proj-llvm \
Security_Severity-High Reported-2019-11-29<br/>Type: Bug-Security<br/><br/>New issue \
19182 by ClusterFuzz-External: llvm:clang-fuzzer: Segv on unknown address in \
clang::Sema::ActOnTag<br/><a \
href="https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19182">https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19182</a><br/><br/>Detailed \
Report: <a href="https://oss-fuzz.com/testcase?key=5715582179868672">https://oss-fuzz.com/testcase?key=5715582179868672</a><br/><br/>Project: \
llvm<br/>Fuzzing Engine: libFuzzer<br/>Fuzz Target: clang-fuzzer<br/>Job Type: \
libfuzzer_msan_llvm<br/>Platform Id: linux<br/><br/>Crash Type: Segv on unknown \
address<br/>Crash Address: <br/>Crash State:<br/> clang::Sema::ActOnTag<br/> \
clang::Parser::ParseEnumSpecifier<br/> \
clang::Parser::ParseDeclarationSpecifiers<br/> <br/>Sanitizer: memory \
(MSAN)<br/><br/>Regressed: <a \
href="https://oss-fuzz.com/revisions?job=libfuzzer_msan_llvm&range=201911200438:20 \
1911230451">https://oss-fuzz.com/revisions?job=libfuzzer_msan_llvm&range=201911200438:201911230451</a><br/><br/>Reproducer \
Testcase: <a href="https://oss-fuzz.com/download?testcase_id=5715582179868672">https://oss-fuzz.com/download?testcase_id=5715582179868672</a><br/><br/>Issue \
filed automatically.<br/><br/>See <a \
href="https://google.github.io/oss-fuzz/advanced-topics/reproducing">https://google.github.io/oss-fuzz/advanced-topics/reproducing</a> \
for instructions to reproduce this bug locally.<br/>When you fix this bug, \
please<br/> * mention the fix revision(s).<br/> * state whether the bug was a \
short-lived regression or an old bug in any stable releases.<br/> * add any other \
useful information.<br/>This information can help downstream consumers.<br/><br/>If \
you need to contact the OSS-Fuzz team with a question, concern, or any other \
feedback, please file an issue at <a \
href="https://github.com/google/oss-fuzz/issues">https://github.com/google/oss-fuzz/issues</a>. \
Comments on individual Monorail issues are not monitored.<br/><br/>-- <br/>You \
received this message because:<br/> 1. You were specifically CC'd on the \
issue<br/><br/>You may adjust your notification preferences at:<br/><a \
href="https://bugs.chromium.org/hosting/settings">https://bugs.chromium.org/hosting/settings</a><br/><br/>Reply \
to this email to add a comment.</div> </body>
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