[Webkit-unassigned] [Bug 182217] New: MarkedBlock should have a footer instead of a header

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Sat Jan 27 10:59:34 PST 2018


https://bugs.webkit.org/show_bug.cgi?id=182217

            Bug ID: 182217
           Summary: MarkedBlock should have a footer instead of a header
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: fpizlo at apple.com

Patch forthcoming.

This helps us create a distancing constraint for positive offsets: any out-of-bounds read or write that has offset smaller than K, where K is MarkedBlock footer size, will end up hitting another object in the same block or the footer.

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