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Issue metadata

Status: Verified
Owner: ----
Closed: May 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug



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Null-dereference READ in gfx::PlatformFontLinux::PlatformFontLinux

Project Member Reported by ClusterFuzz, May 3 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5834182300008448

Fuzzer: ifratric-browserfuzzer-v3
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  gfx::PlatformFontLinux::PlatformFontLinux
  gfx::PlatformFont::CreateDefault
  gfx::Font::Font
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=548271:548273

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5834182300008448

Issue filed automatically.

See https://github.com/google/clusterfuzz-tools for more information.
 
Project Member

Comment 1 by ClusterFuzz, May 3 2018

Components: Internals>Core Internals>Media
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.
Components: -Internals>Media Blink>Fonts
Labels: Test-Predator-Wrong-Components

Comment 3 by e...@chromium.org, May 3 2018

Cc: drott@chromium.org
Labels: -Pri-1 Pri-2
Status: Available (was: Untriaged)
Project Member

Comment 4 by ClusterFuzz, May 17 2018

ClusterFuzz has detected this issue as fixed in range 559377:559378.

Detailed report: https://clusterfuzz.com/testcase?key=5834182300008448

Fuzzer: ifratric-browserfuzzer-v3
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  gfx::PlatformFontLinux::PlatformFontLinux
  gfx::PlatformFont::CreateDefault
  gfx::Font::Font
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=548271:548273
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=559377:559378

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5834182300008448

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 5 by ClusterFuzz, May 17 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Available)
ClusterFuzz testcase 5834182300008448 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.

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