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Issue metadata

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



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Heap-buffer-overflow in SkGradientShaderBase::SkGradientShaderBase

Project Member Reported by ClusterFuzz, Aug 7 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6166831512682496

Fuzzer: afl_paint_op_buffer_fuzzer
Job Type: afl_chrome_asan
Platform Id: linux

Crash Type: Heap-buffer-overflow READ 4
Crash Address: 0x60300000137c
Crash State:
  SkGradientShaderBase::SkGradientShaderBase
  SkLinearGradient::SkLinearGradient
  sk_make_sp<SkLinearGradient,
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=491876:491976

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6166831512682496


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, Aug 7 2017

Labels: M-62
Project Member

Comment 2 by sheriffbot@chromium.org, Aug 7 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
Project Member

Comment 3 by sheriffbot@chromium.org, Aug 7 2017

Labels: Pri-1
Cc: hcm@chromium.org
Components: Internals>Skia
hcm@, can you help triage this?
Project Member

Comment 5 by ClusterFuzz, Aug 8 2017

ClusterFuzz has detected this issue as fixed in range 492357:492411.

Detailed report: https://clusterfuzz.com/testcase?key=6166831512682496

Fuzzer: afl_paint_op_buffer_fuzzer
Job Type: afl_chrome_asan
Platform Id: linux

Crash Type: Heap-buffer-overflow READ 4
Crash Address: 0x60300000137c
Crash State:
  SkGradientShaderBase::SkGradientShaderBase
  SkLinearGradient::SkLinearGradient
  sk_make_sp<SkLinearGradient,
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=491876:491976
Fixed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=492357:492411

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6166831512682496


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 6 by ClusterFuzz, Aug 8 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Untriaged)
ClusterFuzz testcase 6166831512682496 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 7 by sheriffbot@chromium.org, Aug 8 2017

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

Comment 9 by sheriffbot@chromium.org, Nov 14 2017

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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