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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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Heap-buffer-overflow in gpu::gles2::ShaderTranslator::Translate

Project Member Reported by ClusterFuzz, Sep 16 2016

Issue description

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4649911838834688

Fuzzer: libfuzzer_gpu_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Heap-buffer-overflow READ {*}
Crash Address: 0x6180000003e0
Crash State:
  gpu::gles2::ShaderTranslator::Translate
  gpu::gles2::Shader::DoCompile
  gpu::gles2::GLES2DecoderImpl::HandleGetShaderInfoLog
  
Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan&range=419085:419135

Minimized Testcase (0.73 Kb): https://cluster-fuzz.appspot.com/download/AMIfv95jM4mheOJEHV7LnJKbmsWxrlqa5afXkkQ01mTSLqbZDIwSjhrOK0V4-gzn_lrCapEzzHVW8ESTMm_rqav7Vz-HxbQFatOm06hslCPxxXO2eM-c_ck5z2u_qxf0pvpqTJpTxAODZjFEA-QJ9hO_llyrhFDvgg?testcase_id=4649911838834688

Issue filed automatically.

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information.
 
Project Member

Comment 1 by sheriffbot@chromium.org, Sep 17 2016

Labels: M-55
Project Member

Comment 2 by sheriffbot@chromium.org, Sep 17 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 17 2016

Labels: Pri-1
Cc: jmad...@chromium.org
Components: Internals>GPU
Owner: cwallez@chromium.org
Status: Assigned (was: Untriaged)
Assigning to owner of the new translator fuzzer.

Please help find an appropriate owner for this security bug!

Thanks.
Jamie, is this the command_buffer fuzzer case you have started looking at?
No, this is new. I think some of these things are popping up because of the change to disable the pool allocator, but not sure.
Possible duplicate of  issue 647807 . You can check if top-of-tree ANGLE fixes this.
Project Member

Comment 8 by ClusterFuzz, Sep 22 2016

ClusterFuzz has detected this issue as fixed in range 420202:420262.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4649911838834688

Fuzzer: libfuzzer_gpu_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Heap-buffer-overflow READ {*}
Crash Address: 0x6180000003e0
Crash State:
  gpu::gles2::ShaderTranslator::Translate
  gpu::gles2::Shader::DoCompile
  gpu::gles2::GLES2DecoderImpl::HandleGetShaderInfoLog
  
Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan&range=419085:419135
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan&range=420202:420262

Minimized Testcase (0.73 Kb): https://cluster-fuzz.appspot.com/download/AMIfv95jM4mheOJEHV7LnJKbmsWxrlqa5afXkkQ01mTSLqbZDIwSjhrOK0V4-gzn_lrCapEzzHVW8ESTMm_rqav7Vz-HxbQFatOm06hslCPxxXO2eM-c_ck5z2u_qxf0pvpqTJpTxAODZjFEA-QJ9hO_llyrhFDvgg?testcase_id=4649911838834688

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md 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 9 by ClusterFuzz, Sep 22 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 10 by sheriffbot@chromium.org, Sep 23 2016

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

Comment 12 by sheriffbot@chromium.org, Dec 30 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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