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Issue metadata

Status: Verified
Owner:
Closed: Oct 2017
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug-Security



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Use-of-uninitialized-value in gpu::gles2::ScopedPixelUnpackBufferOverride::ScopedPixelUnpackBufferOverride

Project Member Reported by ClusterFuzz, Oct 12 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=4871313075470336

Fuzzer: libFuzzer_gpu_angle_passthrough_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  gpu::gles2::ScopedPixelUnpackBufferOverride::ScopedPixelUnpackBufferOverride
  gpu::gles2::FeatureInfo::InitializeFeatures
  gpu::gles2::FeatureInfo::Initialize
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=458079:458169

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4871313075470336

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Oct 12 2017

Components: Internals>GPU>Internals
Labels: Test-Predator-AutoComponents
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, Oct 12 2017

Labels: Test-Predator-AutoOwner
Owner: geoffl...@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/6019ce8862dbf9acbc4b2a6b42849657002f3b41 (Implement debug marker entry points in the passthrough command buffer.).

If this is incorrect, please remove the owner and apply the Test-Predator-Wrong-CLs label.
Project Member

Comment 3 by sheriffbot@chromium.org, Oct 12 2017

Labels: M-62
Project Member

Comment 4 by sheriffbot@chromium.org, Oct 12 2017

Labels: Pri-1
Project Member

Comment 5 by bugdroid1@chromium.org, Oct 17 2017

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ad8c76a089eadde11bc0dc74f979aac06a597acf

commit ad8c76a089eadde11bc0dc74f979aac06a597acf
Author: Geoff Lang <geofflang@chromium.org>
Date: Tue Oct 17 20:14:08 2017

Initialize orig_binding in ScopedPixelUnpackBufferOverride.

Caught by the fuzzer which can't guarentee that orig_binding will be
written to.

BUG= 773952 

Cq-Include-Trybots: master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
Change-Id: Ib3283bec5c7177eab6a3721f8a9f576d783968f4
Reviewed-on: https://chromium-review.googlesource.com/723759
Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#509501}
[modify] https://crrev.com/ad8c76a089eadde11bc0dc74f979aac06a597acf/gpu/command_buffer/service/feature_info.cc

Project Member

Comment 6 by ClusterFuzz, Oct 18 2017

ClusterFuzz has detected this issue as fixed in range 509426:509655.

Detailed report: https://clusterfuzz.com/testcase?key=4871313075470336

Fuzzer: libFuzzer_gpu_angle_passthrough_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  gpu::gles2::ScopedPixelUnpackBufferOverride::ScopedPixelUnpackBufferOverride
  gpu::gles2::FeatureInfo::InitializeFeatures
  gpu::gles2::FeatureInfo::Initialize
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=458079:458169
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=509426:509655

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4871313075470336

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 7 by ClusterFuzz, Oct 18 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 4871313075470336 is verified as fixed, so closing issue as verified.

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

Comment 8 by sheriffbot@chromium.org, Oct 18 2017

Labels: -Restrict-View-SecurityTeam Restrict-View-SecurityNotify
Labels: -Test-Predator-AutoComponents Test-Predator-Auto-Components
Labels: -Test-Predator-AutoOwner Test-Predator-Auto-Owner
Labels: -M-62 M-64
Labels: Release-0-M64
Project Member

Comment 13 by sheriffbot@chromium.org, Jan 24 2018

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
Project Member

Comment 14 by sheriffbot@chromium.org, Mar 27

Labels: -M-64 M-65

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