New issue
Advanced search Search tips

Issue 768623 link

Starred by 1 user

Issue metadata

Status: Verified
Owner: ----
Closed: Oct 2017
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Windows
Pri: 3
Type: Bug



Sign in to add a comment

Null-dereference READ in blink::Internals::textAffinity()

Project Member Reported by ClusterFuzz, Sep 26 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6406327088971776

Fuzzer: inferno_layout_test_fuzzer
Job Type: windows_asan_content_shell
Platform Id: windows

Crash Type: Null-dereference READ
Crash Address: 0x00000014
Crash State:
  blink::DateTimeSymbolicFieldElement::IndexOfSelectedOption
  blink::Internals::textAffinity
  blink::V8Internals::textAffinityAttributeGetterCallback
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=windows_asan_content_shell&range=502854:502878

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6406327088971776

Issue filed automatically.

See https://github.com/google/clusterfuzz-tools for more information.
 
Components: Blink>JavaScript
Labels: M-63 Test-Predator-Wrong
Project Member

Comment 2 by ClusterFuzz, Oct 1 2017

Components: Blink>Forms
Labels: Test-Predator-AutoComponents
Automatically applying components based on information from OWNERS files. If this seems incorrect, please apply the Test-Predator-Wrong-Components label.

Comment 3 by tkent@chromium.org, Oct 2 2017

Components: -Blink>JavaScript -Blink>Forms Blink>Editing
Summary: Null-dereference READ in blink::Internals::textAffinity() (was: Null-dereference READ in blink::DateTimeSymbolicFieldElement::IndexOfSelectedOption)
Internals::textAffinity() misses null check for GetFrame() and GetPage().

Comment 4 by yosin@chromium.org, Oct 3 2017

Labels: Pri-3
Status: Available (was: Untriaged)
Project Member

Comment 5 by ClusterFuzz, Oct 20 2017

ClusterFuzz has detected this issue as fixed in range 510178:510268.

Detailed report: https://clusterfuzz.com/testcase?key=6406327088971776

Fuzzer: inferno_layout_test_fuzzer
Job Type: windows_asan_content_shell
Platform Id: windows

Crash Type: Null-dereference READ
Crash Address: 0x00000014
Crash State:
  blink::DateTimeSymbolicFieldElement::IndexOfSelectedOption
  blink::Internals::textAffinity
  blink::V8Internals::textAffinityAttributeGetterCallback
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=windows_asan_content_shell&range=502854:502878
Fixed: https://clusterfuzz.com/revisions?job=windows_asan_content_shell&range=510178:510268

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6406327088971776

See https://github.com/google/clusterfuzz-tools 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, Oct 20 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Available)
ClusterFuzz testcase 6406327088971776 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.
Labels: -Test-Predator-AutoComponents Test-Predator-Auto-Components

Sign in to add a comment