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Issue metadata

Status: Duplicate
Merged: issue 855026
Owner:
Closed: Jun 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug-Security



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Bad-cast to blink::LayoutObject from invalid vptr in blink::LayoutObject::IsSVG

Project Member Reported by ClusterFuzz, Jun 22 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5940065956790272

Fuzzer: bj_broddelwerk
Job Type: linux_cfi_chrome
Platform Id: linux

Crash Type: Bad-cast
Crash Address: 0xd922334d260000
Crash State:
  Bad-cast to blink::LayoutObject from invalid vptr
  blink::LayoutObject::IsSVG
  blink::SetShouldInvalidateIfNeeded
  
Sanitizer: cfi (CFI)

Recommended Security Severity: High

Regressed: https://clusterfuzz.com/revisions?job=linux_cfi_chrome&range=569160:569178

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5940065956790272

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Jun 22 2018

Components: Blink>Editing Blink>Layout
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, Jun 22 2018

Labels: Test-Predator-Auto-Owner
Owner: yoichio@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/deb6bb60b6d562719d04c6a564717b332d9c55bd (Let SelectionPaintRange iterator iterate on a flat tree.).

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label. If you aren't the correct owner for this issue, please unassign yourself as soon as possible so it can be re-triaged.
Project Member

Comment 3 by sheriffbot@chromium.org, Jun 23 2018

Labels: M-69 Target-69
Project Member

Comment 4 by sheriffbot@chromium.org, Jun 23 2018

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 5 by sheriffbot@chromium.org, Jun 23 2018

Labels: Pri-1
Mergedinto: 855026
Status: Duplicate (was: Assigned)
Project Member

Comment 7 by ClusterFuzz, Jun 29 2018

ClusterFuzz has detected this issue as fixed in range 571074:571092.

Detailed report: https://clusterfuzz.com/testcase?key=5940065956790272

Fuzzer: bj_broddelwerk
Job Type: linux_cfi_chrome
Platform Id: linux

Crash Type: Bad-cast
Crash Address: 0xd922334d260000
Crash State:
  Bad-cast to blink::LayoutObject from invalid vptr
  blink::LayoutObject::IsSVG
  blink::SetShouldInvalidateIfNeeded
  
Sanitizer: cfi (CFI)

Recommended Security Severity: High

Regressed: https://clusterfuzz.com/revisions?job=linux_cfi_chrome&range=569160:569178
Fixed: https://clusterfuzz.com/revisions?job=linux_cfi_chrome&range=571074:571092

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5940065956790272

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 8 by sheriffbot@chromium.org, Oct 2

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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