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Issue 736207 link

Starred by 1 user

Issue metadata

Status: Duplicate
Merged: issue 736195
Owner:
Last visit > 30 days ago
Closed: Jun 2017
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug-Security

Blocking:
issue pdfium:11



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Use-of-uninitialized-value in SkPath::operator=

Project Member Reported by ClusterFuzz, Jun 23 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5622866480726016

Fuzzer: ifratric_pdf_generic
Job Type: linux_msan_pdfium
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  SkPath::operator=
  SkiaState::SetClip
  SkiaState::SetClipFill
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=linux_msan_pdfium&range=481537:481568

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5622866480726016


Issue filed automatically.

See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.
 
Cc: thestig@chromium.org
Components: Internals>Plugins>PDF
Owner: dsinclair@chromium.org
Status: Assigned (was: Untriaged)
I suspect the flood of these is due to the CL enabling the Skia pathway in PDFium.
Blocking: pdfium:11
Labels: Pri-1
Use of uninit value.. created by a memory deallocation?!

We may flip Skia off again in the near future.
Cc: caryclark@google.com
Project Member

Comment 4 by sheriffbot@chromium.org, Jun 23 2017

Labels: M-61
Project Member

Comment 5 by sheriffbot@chromium.org, Jun 23 2017

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
Cc: -caryclark@google.com dsinclair@chromium.org
Owner: caryclark@chromium.org
Project Member

Comment 7 by ClusterFuzz, Jun 27 2017

ClusterFuzz has detected this issue as fixed in range 482161:482274.

Detailed report: https://clusterfuzz.com/testcase?key=5622866480726016

Fuzzer: ifratric_pdf_generic
Job Type: linux_msan_pdfium
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  SkPath::operator=
  SkiaState::SetClip
  SkiaState::SetClipFill
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=linux_msan_pdfium&range=481537:481568
Fixed: https://clusterfuzz.com/revisions?job=linux_msan_pdfium&range=482161:482274

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5622866480726016


See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs 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 ClusterFuzz, Jun 27 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 5622866480726016 is verified as fixed, so closing issue.

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

Comment 9 by sheriffbot@chromium.org, Jun 27 2017

Labels: -Restrict-View-SecurityTeam Restrict-View-SecurityNotify
Labels: ClusterFuzz-Wrong
Status: Assigned (was: Verified)
Reopening. "Fixed" because we turned off Skia paths.
Labels: -Restrict-View-SecurityNotify Restrict-View-SecurityTeam
Mergedinto: 736195
Owner: caryclark@google.com
Status: Duplicate (was: Assigned)
Labels: -ClusterFuzz-Wrong
Project Member

Comment 14 by sheriffbot@chromium.org, Oct 17 2017

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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