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Issue metadata

Status: Verified
Owner:
Closed: Apr 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug-Security



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Bad-cast to blink::WebAudioSourceProvider from invalid vptr in blink::HTMLMediaElement::AudioSourceProviderImpl::Wrap

Project Member Reported by ClusterFuzz, Apr 3 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6245508918804480

Fuzzer: inferno_layout_test_fuzzer
Job Type: linux_ubsan_vptr_content_shell_drt
Platform Id: linux

Crash Type: Bad-cast
Crash Address: 0x2e27ad55f000
Crash State:
  Bad-cast to blink::WebAudioSourceProvider from invalid vptr
  blink::HTMLMediaElement::AudioSourceProviderImpl::Wrap
  blink::HTMLMediaElement::StartPlayerLoad
  
Sanitizer: undefined (UBSAN)

Recommended Security Severity: High

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=527199:527221

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6245508918804480

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Apr 3 2018

Components: Blink>Media
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, Apr 3 2018

Labels: M-65
Project Member

Comment 3 by sheriffbot@chromium.org, Apr 3 2018

Labels: Pri-1
Cc: media-dev@chromium.org
Owner: mlamouri@chromium.org
Status: Assigned (was: Untriaged)
mlamouri@, could you help triage this issue since you're the owner?

Thanks!
Project Member

Comment 5 by ClusterFuzz, Apr 8 2018

ClusterFuzz has detected this issue as fixed in range 549059:549062.

Detailed report: https://clusterfuzz.com/testcase?key=6245508918804480

Fuzzer: inferno_layout_test_fuzzer
Job Type: linux_ubsan_vptr_content_shell_drt
Platform Id: linux

Crash Type: Bad-cast
Crash Address: 0x2e27ad55f000
Crash State:
  Bad-cast to blink::WebAudioSourceProvider from invalid vptr
  blink::HTMLMediaElement::AudioSourceProviderImpl::Wrap
  blink::HTMLMediaElement::StartPlayerLoad
  
Sanitizer: undefined (UBSAN)

Recommended Security Severity: High

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=527199:527221
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=549059:549062

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6245508918804480

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 6 by ClusterFuzz, Apr 8 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 6245508918804480 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 7 by sheriffbot@chromium.org, Apr 8 2018

Labels: -Restrict-View-SecurityTeam Restrict-View-SecurityNotify
Project Member

Comment 8 by sheriffbot@chromium.org, Jul 15

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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