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Issue metadata

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



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Stack-buffer-overflow in MaskAdditiveBlitter

Project Member Reported by ClusterFuzz, Oct 29 2016

Issue description

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4559449403686912

Fuzzer: afl_skia_path_fuzzer
Job Type: afl_chrome_asan
Platform Id: linux

Crash Type: Stack-buffer-overflow WRITE {*}
Crash Address: 0x7f3511a64598
Crash State:
  MaskAdditiveBlitter
  SkScan::AAAFillPath
  SkScan::AAAFillPath
  
Recommended Security Severity: High

Regressed: https://cluster-fuzz.appspot.com/revisions?job=afl_chrome_asan&range=428613:428614

Minimized Testcase (0.05 Kb): https://cluster-fuzz.appspot.com/download/AMIfv94wNiL-oijKue8H0C0xyIM1zyNqvyFCFSKJPhSvpiS33Y7yeIgwqp0UmJKJqBgDPly9Btc3L4p10I01j7yzCVt-WmIkXTAZWctOIscrMeGV65vbW-jCizOAthvbysLNN2P0d2jeqbI7HD7M_Za6MXCdnSdLYQ?testcase_id=4559449403686912

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 30 2016

ClusterFuzz has detected this issue as fixed in range 428615:428616.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4559449403686912

Fuzzer: afl_skia_path_fuzzer
Job Type: afl_chrome_asan
Platform Id: linux

Crash Type: Stack-buffer-overflow WRITE {*}
Crash Address: 0x7f3511a64598
Crash State:
  MaskAdditiveBlitter
  SkScan::AAAFillPath
  SkScan::AAAFillPath
  
Recommended Security Severity: High

Regressed: https://cluster-fuzz.appspot.com/revisions?job=afl_chrome_asan&range=428613:428614
Fixed: https://cluster-fuzz.appspot.com/revisions?job=afl_chrome_asan&range=428615:428616

Minimized Testcase (0.05 Kb): https://cluster-fuzz.appspot.com/download/AMIfv94wNiL-oijKue8H0C0xyIM1zyNqvyFCFSKJPhSvpiS33Y7yeIgwqp0UmJKJqBgDPly9Btc3L4p10I01j7yzCVt-WmIkXTAZWctOIscrMeGV65vbW-jCizOAthvbysLNN2P0d2jeqbI7HD7M_Za6MXCdnSdLYQ?testcase_id=4559449403686912

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 2 by ClusterFuzz, Oct 30 2016

Labels: ClusterFuzz-Verified
Status: Verified (was: Untriaged)
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 3 by sheriffbot@chromium.org, Oct 30 2016

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

Comment 4 by sheriffbot@chromium.org, Feb 5 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
Project Member

Comment 5 by sheriffbot@chromium.org, Jul 28

Labels: Pri-1

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