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Issue metadata

Status: Verified
Owner:
Last visit 18 days ago
Closed: Aug 14
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Mac
Pri: 1
Type: Bug-Security



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Heap-buffer-overflow in spvtools::val::Instruction::word

Project Member Reported by ClusterFuzz, Aug 11

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=4823027431505920

Fuzzer: afl_spvtools_opt_legalization_fuzzer
Job Type: afl_chrome_asan
Platform Id: linux

Crash Type: Heap-buffer-overflow READ 4
Crash Address: 0x605000000e5c
Crash State:
  spvtools::val::Instruction::word
  spvtools::val::CheckDecorationsOfEntryPoints
  spvtools::val::ValidateDecorations
  
Sanitizer: address (ASAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=581965:581976

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4823027431505920

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Aug 11

Components: Internals>GPU>Internals
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, Aug 11

Labels: Target-70 M-70
Project Member

Comment 3 by sheriffbot@chromium.org, Aug 11

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, Aug 11

Labels: Pri-1
Project Member

Comment 5 by ClusterFuzz, Aug 11

Labels: OS-Mac
Cc: dsinclair@chromium.org
Labels: -Security_Impact-Head -ReleaseBlock-Stable -Target-70 -M-70 Security_Impact-None
Owner: alanbaker@google.com
Status: Assigned (was: Untriaged)
This is not shipped in Chromium yet, removing ReleaseBlock-Stable.
Project Member

Comment 8 by sheriffbot@chromium.org, Aug 14

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

Comment 9 by ClusterFuzz, Aug 15

ClusterFuzz has detected this issue as fixed in range 583092:583110.

Detailed report: https://clusterfuzz.com/testcase?key=4823027431505920

Fuzzer: afl_spvtools_opt_legalization_fuzzer
Job Type: afl_chrome_asan
Platform Id: linux

Crash Type: Heap-buffer-overflow READ 4
Crash Address: 0x605000000e5c
Crash State:
  spvtools::val::Instruction::word
  spvtools::val::CheckDecorationsOfEntryPoints
  spvtools::val::ValidateDecorations
  
Sanitizer: address (ASAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=581965:581976
Fixed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=583092:583110

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4823027431505920

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 10 by ClusterFuzz, Aug 15

Labels: ClusterFuzz-Verified
Status: Verified (was: Fixed)
ClusterFuzz testcase 4823027431505920 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 11 by sheriffbot@chromium.org, Nov 20

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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