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Issue 874764 link

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Issue metadata

Status: WontFix
Owner:
Closed: Aug 28
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug-Security



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Use-of-uninitialized-value in v8::internal::Decoder<v8::internal::Simulator>::DecodeBranchSystemException

Project Member Reported by ClusterFuzz, Aug 16

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5474186315956224

Fuzzer: inferno_layout_test_unmodified
Job Type: linux_msan_chrome
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  v8::internal::Decoder<v8::internal::Simulator>::DecodeBranchSystemException
  v8::internal::Simulator::ExecuteInstruction
  v8::internal::Simulator::Run
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=linux_msan_chrome&range=582653:582655

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5474186315956224

Issue filed automatically.

See https://github.com/google/clusterfuzz-tools for more information.
 
Project Member

Comment 1 by ClusterFuzz, Aug 16

Components: Blink>JavaScript
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 sheriffbot@chromium.org, Aug 16

Labels: Target-70 M-70
Project Member

Comment 3 by sheriffbot@chromium.org, Aug 16

Labels: ReleaseBlock-Stable
This is a serious security regression. If you are not able to fix this quickly, please revert the change that introduced it.

If this doesn't affect a release branch, or has not been properly classified for severity, please update the Security_Impact or Security_Severity labels, and remove the ReleaseBlock label. To disable this altogether, apply ReleaseBlock-NA.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot
Project Member

Comment 4 by sheriffbot@chromium.org, Aug 16

Labels: Pri-1
Owner: ishell@chromium.org
Status: Assigned (was: Untriaged)
ishell: Could you help finding an owner for this one? Thanks.
I wasn't able to reproduce the issue on my machine so far.
Project Member

Comment 7 by ClusterFuzz, Aug 27

Labels: -Reproducible Unreproducible
ClusterFuzz testcase 5474186315956224 appears to be flaky, updating reproducibility label.
Status: WontFix (was: Assigned)
Given #6 and #7 marking this as WontFix.
Project Member

Comment 9 by sheriffbot@chromium.org, Dec 4

Labels: -Restrict-View-SecurityTeam allpublic
This bug has been closed for more than 14 weeks. Removing security view restrictions.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

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