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Issue 832787 link

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Issue metadata

Status: Verified
Owner:
Closed: Apr 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug-Security



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Use-of-uninitialized-value in TParseContext::nonInitErrorCheck

Project Member Reported by ClusterFuzz, Apr 13 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=4613823284903936

Fuzzer: libFuzzer_swiftshader_vertex_routine_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  TParseContext::nonInitErrorCheck
  TParseContext::parseSingleDeclaration
  yyparse
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=521502:521555

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4613823284903936

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Apr 13 2018

Components: Internals>GPU>SwiftShader
Labels: Test-Predator-Auto-Components
Automatically applying components based on crash stacktrace and information from OWNERS files.

If this is incorrect, please apply the Test-Predator-Wrong-Components label.
Owner: sugoi@chromium.org
Status: Assigned (was: Untriaged)
Looks like this might be related to the Swiftshader roll in crrev.com/c/806725, sugoi can you take a look? Thanks.
Project Member

Comment 3 by sheriffbot@chromium.org, Apr 14 2018

Labels: M-66
Project Member

Comment 4 by sheriffbot@chromium.org, Apr 14 2018

Labels: Pri-1
Project Member

Comment 5 by ClusterFuzz, Apr 15 2018

ClusterFuzz has detected this issue as fixed in range 550284:550296.

Detailed report: https://clusterfuzz.com/testcase?key=4613823284903936

Fuzzer: libFuzzer_swiftshader_vertex_routine_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  TParseContext::nonInitErrorCheck
  TParseContext::parseSingleDeclaration
  yyparse
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=521502:521555
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=550284:550296

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4613823284903936

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.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, Apr 15 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 4613823284903936 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, Apr 15 2018

Labels: -Restrict-View-SecurityTeam Restrict-View-SecurityNotify

Comment 8 by awhalley@google.com, Apr 17 2018

Labels: -M-66 M-67
Labels: Release-0-M67
Project Member

Comment 10 by sheriffbot@chromium.org, Jul 22

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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