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Issue metadata

Status: Duplicate
Merged: issue 903527
Owner:
Closed: Nov 12
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Null-dereference READ in v8::internal::AstRawString::AsArrayIndex

Project Member Reported by ClusterFuzz, Nov 9

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5413811865255936

Fuzzer: libFuzzer_v8_fully_instrumented_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000018
Crash State:
  v8::internal::AstRawString::AsArrayIndex
  v8::internal::Literal::IsPropertyName
  v8::internal::ParserBase<v8::internal::Parser>::DoParseMemberExpressionContinuat
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=606292:606307

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5413811865255936

Issue filed automatically.

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.
 
Project Member

Comment 1 by ClusterFuzz, Nov 9

Components: Blink>JavaScript>Language
Labels: Test-Predator-Auto-Components
Automatically applying components based on crash stacktrace and information from OWNERS files.

If this is incorrect, please apply the Test-Predator-Wrong-Components label.
Project Member

Comment 2 by ClusterFuzz, Nov 9

Cc: metzman@chromium.org
Labels: ClusterFuzz-Auto-CC
Automatically adding ccs based on OWNERS file / target commit history.

If this is incorrect, please add ClusterFuzz-Wrong label.
Project Member

Comment 3 by ClusterFuzz, Nov 9

Cc: verwa...@chromium.org
Labels: Test-Predator-Auto-CC
Automatically adding ccs based on suspected regression changelists:

[parser] Make LookupRecursive less recursive by verwaest@chromium.org - https://chromium.googlesource.com/v8/v8/+/5e6f91e7c6ebf5fb5e221112a68b3c9b9107e1fb

[parser] Introduce FailureExpression to return instead of nullptr by verwaest@chromium.org - https://chromium.googlesource.com/v8/v8/+/9d27ec3aacf76b8131c323dd57968209e6f6ff4c

[parser] Simplify Scope::Declare by verwaest@chromium.org - https://chromium.googlesource.com/v8/v8/+/50f52476d91aabb92b168236ae0050103eec56d8

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label.
Owner: ishell@chromium.org
Status: Assigned (was: Untriaged)
Mergedinto: 903527
Status: Duplicate (was: Assigned)
Project Member

Comment 6 by ClusterFuzz, Nov 13

ClusterFuzz has detected this issue as fixed in range 607217:607221.

Detailed report: https://clusterfuzz.com/testcase?key=5413811865255936

Fuzzer: libFuzzer_v8_fully_instrumented_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000018
Crash State:
  v8::internal::AstRawString::AsArrayIndex
  v8::internal::Literal::IsPropertyName
  v8::internal::ParserBase<v8::internal::Parser>::DoParseMemberExpressionContinuat
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=606292:606307
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=607217:607221

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5413811865255936

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.

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

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