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Issue 627608 link

Starred by 1 user
Status: WontFix
Owner: ----
Closed: Jul 2016
Cc:
editing-dev@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug



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FontSizeDelta command with -webkit-columns CSS property crashes

Project Member Reported by ClusterFuzz, Jul 12 2016 
Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5873363168002048

Fuzzer: ochang_domfuzzer
Job Type: linux_asan_chrome_v8_arm
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x00000008
Crash State:
  blink::ApplyStyleCommand::applyRelativeFontStyleChange
  blink::ApplyStyleCommand::doApply
  blink::CompositeEditCommand::apply
  

Minimized Testcase (0.54 Kb):
Download: https://cluster-fuzz.appspot.com/download/AMIfv96o05lFHfT2TtBXCzVhlVNWumgBsgDUF6qpbR_cRifKJibmhfVF3zTqOOV6TY8pLBhtSje67EGPdtGy-vWFQRBj_twvjqnI4zEwy4Bvm0uWxNLkaCr4li6utebZ5uomHzgfx-Q5XIeAwrZYWcpfpyTaoTat6Q?testcase_id=5873363168002048
<script src="../../../resources/js-test-pre.js"></script>
<style>    }
    }
#dom-fuzz-71590001 {
    }
p {
    -webkit-columns: 4
</style><script>
    try {
    } catch (e) {
    }
function fuzz() {
document.designMode = 'on';
  document.execCommand("selectAll");
  document.execCommand("InsertText",false,"Black");
  document.execCommand("selectAll");
  document.execCommand("FontSizeDelta",false,3);
}
 setTimeout(fuzz); </script><p><script>
description();
var input = document.createElement('input');
document.body.appendChild(input);
</script>


Filer: mmohammad

See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.

Comment 1 by mmohammad@chromium.org, Jul 12 2016

Cc: keishi@chromium.org
Owner: tkent@chromium.org
Status: Assigned (was: Available)
suspected Changelist: https://chromium.googlesource.com/chromium/src//+/9cbb6896249a5adb3d107eea64e010b003f6fdf0

or 

Changelist: https://chromium.googlesource.com/chromium/src//+/54c2f4c9998fc76d13ba11e75cffbfa0f9763c35


tkent/keish @ could you please look into this. Thanks in advance

Comment 2 by tkent@chromium.org, Jul 12 2016

Cc: -keishi@chromium.org
Components: Blink>Editing
Owner: ----
Status: Untriaged (was: Assigned)
#1, both of them look unrelated to this issue.
Route to Editing triage.

Comment 3 by yosin@chromium.org, Jul 13 2016

Labels: -Pri-1 Pri-2
Status: WontFix (was: Untriaged)
Summary: FontSizeDelta command with -webkit-columns CSS property crashes (was: Crash in blink::ApplyStyleCommand::applyRelativeFontStyleChange)
Mark WontFix since I could not reproduce with ToT.
Lower to Pri-2, since real world usage of FontSizeDelta is low.
Project Member

Comment 4 by sheriffbot@chromium.org, Nov 22 2016

Labels: -Restrict-View-EditIssue
Removing EditIssue view restrictions from ClusterFuzz filed bugs. If you believe that this issue should still be restricted, please reapply the label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot
Project Member

Comment 5 by ClusterFuzz, Mar 9 2017 

ClusterFuzz has detected this issue as fixed in range 455091:455392.

Detailed report: https://clusterfuzz.com/testcase?key=5873363168002048

Fuzzer: ochang_domfuzzer
Job Type: linux_asan_chrome_v8_arm
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x00000008
Crash State:
  blink::ApplyStyleCommand::applyRelativeFontStyleChange
  blink::ApplyStyleCommand::doApply
  blink::CompositeEditCommand::apply
  
Sanitizer: address (ASAN)

Fixed: https://clusterfuzz.com/revisions?job=linux_asan_chrome_v8_arm&range=455091:455392

Reproducer Testcase: https://clusterfuzz.com/download/AMIfv96o05lFHfT2TtBXCzVhlVNWumgBsgDUF6qpbR_cRifKJibmhfVF3zTqOOV6TY8pLBhtSje67EGPdtGy-vWFQRBj_twvjqnI4zEwy4Bvm0uWxNLkaCr4li6utebZ5uomHzgfx-Q5XIeAwrZYWcpfpyTaoTat6Q?testcase_id=5873363168002048


See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.
►

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