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Issue metadata

Status: Verified
Owner: ----
Closed: Jul 21
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug-Security



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Use-of-uninitialized-value in mojo::core::ChannelPosix::WriteNoLock

Project Member Reported by ClusterFuzz, Jul 21

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6326890273701888

Fuzzer: mbarbella_js_mutation_layout
Job Type: linux_msan_chrome
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  mojo::core::ChannelPosix::WriteNoLock
  mojo::core::ChannelPosix::Write
  mojo::core::NodeChannel::WriteChannelMessage
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=linux_msan_chrome&range=576877:576886

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6326890273701888

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Jul 21

ClusterFuzz has detected this issue as fixed in range 577012:577014.

Detailed report: https://clusterfuzz.com/testcase?key=6326890273701888

Fuzzer: mbarbella_js_mutation_layout
Job Type: linux_msan_chrome
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  mojo::core::ChannelPosix::WriteNoLock
  mojo::core::ChannelPosix::Write
  mojo::core::NodeChannel::WriteChannelMessage
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=linux_msan_chrome&range=576877:576886
Fixed: https://clusterfuzz.com/revisions?job=linux_msan_chrome&range=577012:577014

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6326890273701888

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

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

Comment 2 by ClusterFuzz, Jul 21

Labels: ClusterFuzz-Verified
Status: Verified (was: Untriaged)
ClusterFuzz testcase 6326890273701888 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.
Project Member

Comment 3 by sheriffbot@chromium.org, Jul 21

Labels: -Restrict-View-SecurityTeam Restrict-View-SecurityNotify
Components: Internals>Mojo
Project Member

Comment 5 by sheriffbot@chromium.org, Jul 28

Labels: M-69 Target-69
Project Member

Comment 6 by sheriffbot@chromium.org, Jul 28

Labels: Pri-1
Project Member

Comment 7 by sheriffbot@chromium.org, Oct 27

Labels: -Restrict-View-SecurityNotify 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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