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Issue 674071 link

Starred by 1 user
Status: WontFix
Owner:
█ trchen@chromium.org
Last visit > 30 days ago
Closed: Dec 2016
Cc:
█ msrchandra@chromium.org
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug



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Integer-overflow in blink::operator-

Project Member Reported by ClusterFuzz, Dec 14 2016 
Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4997000351449088

Fuzzer: inferno_twister
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  blink::operator-
  blink::PartPainter::paintContents
  blink::LayoutPart::paintContents
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_ubsan_chrome&range=410031:410187

Minimized Testcase (0.41 Kb): https://cluster-fuzz.appspot.com/download/AMIfv95Gneb0eZPg-yovcqxbqk0nl657qbc5qxYxmZzRwDQMIT0FyKMl9lKNfQPHHE53XlL3dWWUEI1Wwnu8YRGfcWNhp722phbvtJFeTyHsVWukmUVegRb9iFNZLV58sAGULAIP8AFIi1EXV2oXI5andB1hrF1GlQ?testcase_id=4997000351449088

Additional requirements: Requires HTTP

Issue filed automatically.

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

Comment 1 by msrchandra@chromium.org, Dec 14 2016

Cc: msrchandra@chromium.org
Labels: Test-Predator-Correct-CLs
Owner: trchen@chromium.org
Status: Assigned (was: Untriaged)
Assigning to the concern owner from find it results --
The result is a list of CLs that change the crashed files. 

Author: trchen
Project: chromium
Changelist: https://chromium.googlesource.com/chromium/src/+/e0614750c320abba64d4f0280e2b82b7c37f3125
Time: Fri Aug 05 21:33:11 2016
Lines 110-113 of file PartPainter.cpp which potentially caused crash are changed in this cl (frame #1, "blink::PartPainter::paintContents"). 

Lines 265-275 of file LayoutPart.cpp which potentially caused crash are changed in this cl (frame #2, "blink::LayoutPart::paintContents"; frame #4, "blink::LayoutPart::paint").
Minimum distance from crash line to modified line: 0. (file: PartPainter.cpp, crashed on: 110, modified: 110).

@trchen -- Could you please look into the issue, kindly re-assign if this is not related to your changes.
Thank You.

Comment 2 by trchen@chromium.org, Dec 14 2016

Status: WontFix (was: Assigned)
The HTML contains some crazy big number. Of course it's going to overflow.
►

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