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Issue metadata

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



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Heap-buffer-overflow in TIntermConstantUnion::fold

Project Member Reported by ClusterFuzz, Feb 20 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=4735389718544384

Fuzzer: libFuzzer_swiftshader_vertex_routine_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Heap-buffer-overflow READ 1
Crash Address: 0x60300000983c
Crash State:
  TIntermConstantUnion::fold
  TParseContext::addFunctionCallOrMethod
  yyparse
  
Sanitizer: address (ASAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=521502:521564

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4735389718544384

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Feb 20 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.
Project Member

Comment 2 by sheriffbot@chromium.org, Feb 20 2018

Labels: M-65
Project Member

Comment 3 by sheriffbot@chromium.org, Feb 20 2018

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 4 by sheriffbot@chromium.org, Feb 20 2018

Labels: Pri-1

Comment 5 by gov...@chromium.org, Feb 20 2018

Cc: awhalley@chromium.org
+awhalley@ could you ptal and assign to appropriate dev pls?
Labels: -Security_Impact-Beta -M-65 M-66
This'll get picked up by the chrome security sheriff for triage. Setting labels as we don't need to block M65 on this.

Comment 8 by sugoi@chromium.org, Feb 21 2018

Labels: -ReleaseBlock-Stable ReleaseBlock-NA
Owner: sugoi@chromium.org
Project Member

Comment 9 by sheriffbot@chromium.org, Feb 21 2018

Labels: Security_Impact-Head
Project Member

Comment 10 by sheriffbot@chromium.org, Feb 21 2018

Status: Assigned (was: Untriaged)
Project Member

Comment 11 by ClusterFuzz, Feb 27 2018

ClusterFuzz has detected this issue as fixed in range 539126:539132.

Detailed report: https://clusterfuzz.com/testcase?key=4735389718544384

Fuzzer: libFuzzer_swiftshader_vertex_routine_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Heap-buffer-overflow READ 1
Crash Address: 0x60300000983c
Crash State:
  TIntermConstantUnion::fold
  TParseContext::addFunctionCallOrMethod
  yyparse
  
Sanitizer: address (ASAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=521502:521564
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=539126:539132

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4735389718544384

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 12 by ClusterFuzz, Feb 27 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 4735389718544384 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 13 by sheriffbot@chromium.org, Feb 27 2018

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

Comment 14 by sheriffbot@chromium.org, Mar 27 2018

Labels: -Security_Impact-Head Security_Impact-Beta
Project Member

Comment 15 by sheriffbot@chromium.org, Jun 5 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

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