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Issue 646786 link

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Issue metadata

Status: Verified
Owner:
Closed: Sep 2016
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug-Security



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Use-of-uninitialized-value in SkMatrix44::computeTypeMask

Project Member Reported by ClusterFuzz, Sep 14 2016

Issue description

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5348027298742272

Fuzzer: therealholden_worker
Job Type: linux_msan_content_shell_drt
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  SkMatrix44::computeTypeMask
  SkMatrix44::setConcat
  gfx::ColorSpaceToColorSpaceTransform::ColorSpaceToColorSpaceTransform
  
Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_msan_content_shell_drt&range=418377:418438

Minimized Testcase (2.99 Kb): https://cluster-fuzz.appspot.com/download/AMIfv97PLIfTWgygoSpNQNZIUNGc-tq4wMRAfKONVMSJPBIrfJ8-24NuhJWs8tEC3u0McVdvge3gqt7yFvx2uTDyqCElLrN2lJTBDuIrhxUL8Qh36fhkeQXyuaLgUOcnDC_0Tik5XvpgGagu7QYg9lLZtJtxE-E3-Q?testcase_id=5348027298742272

Additional requirements: Requires HTTP

Issue filed automatically.

See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.
 
Project Member

Comment 1 by sheriffbot@chromium.org, Sep 14 2016

Labels: M-55
Project Member

Comment 2 by sheriffbot@chromium.org, Sep 14 2016

Labels: ReleaseBlock-Beta
This issue is a security regression. If you are not able to fix this quickly, please revert the change that introduced it.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot
Project Member

Comment 3 by sheriffbot@chromium.org, Sep 14 2016

Labels: Pri-1
Cc: fmalita@chromium.org
Components: Internals>Skia
Owner: brianosman@chromium.org
Status: Assigned (was: Untriaged)
Hello Brian,

I've assigned this security ticket to you, merely as you were the last person to touch SkMatrix44.cpp.  (CC'd Florin as well.)

Feel free to re-assign as appropriate or adjust labels!

Thanks for your help!
Project Member

Comment 5 by ClusterFuzz, Sep 15 2016

ClusterFuzz has detected this issue as fixed in range 418478:418498.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5348027298742272

Fuzzer: therealholden_worker
Job Type: linux_msan_content_shell_drt
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  SkMatrix44::computeTypeMask
  SkMatrix44::setConcat
  gfx::ColorSpaceToColorSpaceTransform::ColorSpaceToColorSpaceTransform
  
Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_msan_content_shell_drt&range=418377:418438
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_msan_content_shell_drt&range=418478:418498

Minimized Testcase (2.99 Kb): https://cluster-fuzz.appspot.com/download/AMIfv97PLIfTWgygoSpNQNZIUNGc-tq4wMRAfKONVMSJPBIrfJ8-24NuhJWs8tEC3u0McVdvge3gqt7yFvx2uTDyqCElLrN2lJTBDuIrhxUL8Qh36fhkeQXyuaLgUOcnDC_0Tik5XvpgGagu7QYg9lLZtJtxE-E3-Q?testcase_id=5348027298742272

Additional requirements: Requires HTTP

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 6 by ClusterFuzz, Sep 15 2016

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

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.
This issue is (?) related to  issue 44872  (c#137 and revert c#138) with original commit: 418422 and revert (fix) 418490.
Project Member

Comment 8 by sheriffbot@chromium.org, Sep 15 2016

Labels: -Restrict-View-SecurityTeam Restrict-View-SecurityNotify
Labels: -reward-topanel reward-0
Also found before the report.
Labels: -ReleaseBlock-Beta
Project Member

Comment 11 by sheriffbot@chromium.org, Dec 22 2016

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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