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Issue 875633 link

Starred by 2 users
Status: Assigned
Owner:
dcheng@chromium.org
Cc:
kkaluri@chromium.org
dcheng@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Null-dereference READ in blink::WebLocalFrameImpl::LocalRootFrameWidget

Project Member Reported by ClusterFuzz, Aug 19 
Detailed report: https://clusterfuzz.com/testcase?key=4930114153086976

Fuzzer: inferno_twister
Job Type: linux_ubsan_vptr_chrome
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  blink::WebLocalFrameImpl::LocalRootFrameWidget
  blink::ChromeClientImpl::ScheduleAnimation
  blink::ValidationMessageOverlayDelegate::UpdateFrameViewState
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_chrome&range=542401:542402

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4930114153086976

Additional requirements: Requires Gestures

Issue filed automatically.

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

Comment 1 by kkaluri@chromium.org, Aug 21

Cc: kkaluri@chromium.org
Labels: M-69
Owner: dcheng@chromium.org
Status: Assigned (was: Untriaged)
Predator has provided 1 possible suspect 

-> [OOPIF] Remove use of covariant return types for WebLocalFrame::FrameWidget(). by dcheng@chromium.org

Suspect CL : https://chromium.googlesource.com/chromium/src/+/4a96073611e1981d8572a2eadf7f8412a28ba157
Hence assigning to it's author.

dcheng@ : Could you please look into it

Comment 2 by dcheng@chromium.org, Dec 13

Cc: dcheng@chromium.org
 Issue 893961  has been merged into this issue.
Project Member

Comment 3 by ClusterFuzz, Dec 13

Components: Blink>Internals
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.
►

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