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Heap-buffer-overflow in v8::internal::Simulator::LoadStoreHelper |
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Issue descriptionDetailed report: https://cluster-fuzz.appspot.com/testcase?key=6387905562148864 Fuzzer: mbarbella_js_mutation Job Type: linux_asan_d8_v8_arm64_dbg Platform Id: linux Crash Type: Heap-buffer-overflow READ 4 Crash Address: 0x6020000183d3 Crash State: v8::internal::Simulator::LoadStoreHelper v8::internal::Simulator::ExecuteInstruction v8::internal::Simulator::CheckPCSComplianceAndRun Recommended Security Severity: Medium Regressed: V8: r37469:37470 Minimized Testcase (0.40 Kb): Download: https://cluster-fuzz.appspot.com/download/AMIfv945gp-ngHlAPrPr5xBjxH2BlnU65SVoL5jqzrqgmGBKwdcjoJ46J6EXk6xgLUWJNr3ouyrihiyeiUmuKQcugUdwZ10oZWY84cQ_fjK_B3n1SbjMvQxtmip-anPaVox1tAwsfQysROlsw8YK31ShlccJamawAA?testcase_id=6387905562148864 var __v_18 = {}; __f_13(); function __f_70(expected, __f_87, __f_17) { __f_87(__v_18, __f_17, new ArrayBuffer(1)).__f_31(); } function __f_13() { __f_70(0, __f_65); } ( { })(); function __f_65(__v_18, __v_46, buffer) { "use asm"; var __v_17 = new __v_18.Int32Array(buffer); function __f_87() { var __v_51 = 0; __v_51 = __v_17[0] & -1; return __v_51 | 0; } return {__f_31: __f_87}; } Issue manually filed by: titzer See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.
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Oct 5 2016
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Oct 5 2016
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Oct 5 2016
Impacts beta per v8 regression range.
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Oct 6 2016
Looks like this is a case of reading off the end of a non-word-size array buffer. Not sure why the other platforms with ASAN don't catch this, but this is definitely a bug.
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Oct 6 2016
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Oct 6 2016
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Oct 7 2016
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Oct 10 2016
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Oct 11 2016
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Oct 11 2016
Moving to M55, per sheriffbot rules this will always get RBS as long the Security_Impact-Beta label is present.
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Oct 20 2016
titzer: Uh oh! This issue still open and hasn't been updated in the last 14 days. This is a serious vulnerability, and we want to ensure that there's progress. Could you please leave an update with the current status and any potential blockers? If you're not the right owner for this issue, could you please remove yourself as soon as possible or help us find the right one? If the issue is fixed or you can't reproduce it, please close the bug. If you've started working on a fix, please set the status to Started. Thanks for your time! To disable nags, add the Disable-Nags label. For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot
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Oct 26 2016
**** Bulk edit - please ignore if not applicable **** A friendly reminder that M55 Stable is launch is coming soon! Your bug is labelled as Stable ReleaseBlock, pls make sure to land the fix and get it merged into the release branch ASAP so it gets enough baking time in Beta (before Stable promotion). Thank you!
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Oct 31 2016
**** Bulk edit - please ignore if not applicable **** A friendly reminder that M55 Stable is launch is coming soon! Your bug is labelled as Stable ReleaseBlock, pls make sure to land the fix and get it merged into the release branch ASAP so it gets enough baking time in Beta (before Stable promotion). Thank you!
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Nov 3 2016
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Nov 3 2016
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Feb 10 2017
This bug has been closed for more than 14 weeks. Removing security view restrictions. For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot |
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Comment 1 by titzer@chromium.org
, Oct 5 2016Owner: titzer@chromium.org