Float-cast-overflow in blink::MouseRelatedEvent::layerY |
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Issue descriptionDetailed report: https://cluster-fuzz.appspot.com/testcase?key=6367182473920512 Fuzzer: ifratric-browserfuzzer-v3 Job Type: linux_ubsan_chrome Platform Id: linux Crash Type: Float-cast-overflow Crash Address: Crash State: blink::MouseRelatedEvent::layerY layerYAttributeGetter blink::MouseEventV8Internal::layerYAttributeGetterCallback Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_ubsan_chrome&range=435261:438085 Minimized Testcase (0.68 Kb): Download: https://cluster-fuzz.appspot.com/download/AMIfv96EuuLUiDmPniNgb3DdhWDawzeWqQiOtbLID02FwRZAFTEyJ0Ytw169qstA9sgHMnG-D5eTyz_RFccCrzay9gPtX3PdHMsqpfWb3Vzdd-WAmbXmcB3zCsTRS4xwzfqbzcMkVwDEnecXmsPxhrVLZJiD69Gvhg?testcase_id=6367182473920512 <style> .class2 { -webkit-user-select: none; -webkit-filter: hue-rotate(6deg) } </style> <script> var fakestring = {toString: function() { return "1" }} function jsfuzzer() { try { /* EventHandler*/ var var00001 = htmlvar00026.onmouseleave; } catch(e) { /*console.log();*/ } /* WheelEvent*/ var var00016 = document.createEvent("WheelEvent"); /* MouseEvent*/ var var00015 = var00016; var00015.initMouseEvent(); /* boolean*/ var var00039 = htmlvar00008.dispatchEvent(var00015); var00016.initMouseEvent(String.fromCharCode(),false,false,var00001,0,0,-1,1,-2147483648); /* long*/ var var00127 = var00015.layerY; } </script> <body onload=jsfuzzer()<summary id="htmlvar00008" class="class2"jD"> Issue filed automatically. See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.
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Dec 19 2016
Assigning to the concern owner who might have touched the related code. @mustaq -- Could you please look into the issue, kindly re-assign if this is not related to your changes. Thank You.
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Dec 22 2016
ClusterFuzz has detected this issue as fixed in range 440242:440280. Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6367182473920512 Fuzzer: ifratric-browserfuzzer-v3 Job Type: linux_ubsan_chrome Platform Id: linux Crash Type: Float-cast-overflow Crash Address: Crash State: blink::MouseRelatedEvent::layerY layerYAttributeGetter blink::MouseEventV8Internal::layerYAttributeGetterCallback Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_ubsan_chrome&range=435261:438085 Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_ubsan_chrome&range=440242:440280 Minimized Testcase (0.68 Kb): Download: https://cluster-fuzz.appspot.com/download/AMIfv96EuuLUiDmPniNgb3DdhWDawzeWqQiOtbLID02FwRZAFTEyJ0Ytw169qstA9sgHMnG-D5eTyz_RFccCrzay9gPtX3PdHMsqpfWb3Vzdd-WAmbXmcB3zCsTRS4xwzfqbzcMkVwDEnecXmsPxhrVLZJiD69Gvhg?testcase_id=6367182473920512 <style> .class2 { -webkit-user-select: none; -webkit-filter: hue-rotate(6deg) } </style> <script> var fakestring = {toString: function() { return "1" }} function jsfuzzer() { try { /* EventHandler*/ var var00001 = htmlvar00026.onmouseleave; } catch(e) { /*console.log();*/ } /* WheelEvent*/ var var00016 = document.createEvent("WheelEvent"); /* MouseEvent*/ var var00015 = var00016; var00015.initMouseEvent(); /* boolean*/ var var00039 = htmlvar00008.dispatchEvent(var00015); var00016.initMouseEvent(String.fromCharCode(),false,false,var00001,0,0,-1,1,-2147483648); /* long*/ var var00127 = var00015.layerY; } </script> <body onload=jsfuzzer()<summary id="htmlvar00008" class="class2"jD"> 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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Dec 22 2016
ClusterFuzz testcase 6367182473920512 is verified as fixed, so closing issue. If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.
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Jan 5 2017
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Comment 1 by tkent@chromium.org
, Dec 18 2016