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Issue metadata

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



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Integer-overflow in ClampX_ClampY_filter_affine_SSE2

Project Member Reported by ClusterFuzz, Aug 16 2016

Issue description

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6741621532262400

Fuzzer: inferno_twister
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  ClampX_ClampY_filter_affine_SSE2
  BitmapProcShaderContext::shadeSpan
  SkColorFilterShader::FilterShaderContext::shadeSpan
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_ubsan_chrome&range=378868:378887

Minimized Testcase (13.10 Kb): https://cluster-fuzz.appspot.com/download/AMIfv968W_cFFUguxYpbWvHYuUdpRkUja32saTRf49qnqS3_a6Ptagszm-MW_oO8y2MJ1QFyzZCkcMDmbC-X74TqAvQSVYwtSYdmmU3bm7PzbHAiEtiunfSUUSpuxcUArMBC4SM2a1giqJEXQcf8wxipLo2ImvJIVg?testcase_id=6741621532262400

Issue manually filed by: ajha

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

Comment 1 by ajha@chromium.org, Aug 16 2016

Cc: ajha@chromium.org
Components: Internals>Skia
Labels: Findit-for-crash Te-Logged M-53
Owner: reed@google.com
Status: Assigned (was: Untriaged)
Findit-result:
==============
Suspected CLs	The result is a list of CLs that change the crashed files.

Author: reed
Project: chromium-skia
Changelist: https://chromium.googlesource.com/skia.git/+/05a5647efed7fcbcc5bd1efa445a6a3ab445a6c3
Time: Wed Mar 02 17:49:02 2016
Lines 76-89 of file SkBitmapProcShader.cpp which potentially caused crash are changed in this cl (frame #1, "BitmapProcShaderContext::shadeSpan").

File SkBitmapProcState_opts_SSE2.cpp is changed in this cl (and is part of stack frame #0, "ClampX_ClampY_filter_affine_SSE2")
Minimum distance from crash line to modified line: 0. (file: SkBitmapProcShader.cpp, crashed on: 73, modified: 73).

Suspected Project: chromium-skia
Suspected Component: Internals>Skia

reed@: Could you please take a look at this and help in investigating this further.

Thank you!
Project Member

Comment 2 by ClusterFuzz, Sep 12 2016

ClusterFuzz has detected this issue as fixed in range 417845:417849.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6741621532262400

Fuzzer: inferno_twister
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  ClampX_ClampY_filter_affine_SSE2
  BitmapProcShaderContext::shadeSpan
  SkColorFilterShader::FilterShaderContext::shadeSpan
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_ubsan_chrome&range=378868:378887
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_ubsan_chrome&range=417845:417849

Minimized Testcase (13.10 Kb): https://cluster-fuzz.appspot.com/download/AMIfv968W_cFFUguxYpbWvHYuUdpRkUja32saTRf49qnqS3_a6Ptagszm-MW_oO8y2MJ1QFyzZCkcMDmbC-X74TqAvQSVYwtSYdmmU3bm7PzbHAiEtiunfSUUSpuxcUArMBC4SM2a1giqJEXQcf8wxipLo2ImvJIVg?testcase_id=6741621532262400

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 3 by ClusterFuzz, Sep 12 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.
Project Member

Comment 4 by sheriffbot@chromium.org, Nov 22 2016

Labels: -Restrict-View-EditIssue
Removing EditIssue view restrictions from ClusterFuzz filed bugs. If you believe that this issue should still be restricted, please reapply the label.

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

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