[Webkit-unassigned] [Bug 147393] Parse the entire WebAssembly modules

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=147393

Sukolsak Sakshuwong <sukolsak at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #257974|Rewrote                     |Rewrote
        description|WASMReader::readCompactUInt |WASMReader::readCompactUInt
                   |32()                       |32()
                   |- check that the number of  |
                   |bytes does not exceed 5    |
                   |- check that the fifth byte |
                   |is less than 2^(32 - 7*4) = |
                   |2^4 to prevent integer      |
                   |overflows                  |
                   |- check that the last byte  |
                   |is not zero, unless the     |
                   |number if zero              |

--- Comment #12 from Sukolsak Sakshuwong <sukolsak at gmail.com> ---
Comment on attachment 257974
  --> https://bugs.webkit.org/attachment.cgi?id=257974
Rewrote WASMReader::readCompactUInt32()

Rewrote WASMReader::readCompactUInt32()
- check that the number of bytes does not exceed 5
- check that the fifth byte is less than 2^(32 - 7*4) = 2^4 to prevent integer overflows
- check that the last byte is not zero, unless it's the only byte of the number

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