ChakraCore servicing fixes for Feb release #6375
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…rosoft Edge 44.18362.387.0 may be exploited to execute arbitrary code. - Individual
```javascript
class child extends Object {
constructor(){
let f = () => {
super()++
};
f();
}
}
```
In above snippet, we attempt to emit a load for the target of the super call. This causes us to acquire a tmp register for the target of the super call node out-of-order relative to how the tmp registers are typically acquired in `EmitSuperCall`. Then later when we release the call target location we notice that the tmp registers are being released out-of-order. Fix is to skip emitting the call target when emitting a load of a super call node - this is already handled by `EmitSuperCall` so it isn't necessary anyway.
pleath
approved these changes
Feb 11, 2020
chakrabot
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Feb 11, 2020
Merge pull request #6375 from akroshg:servicing/2002 Fixes following CVEs [CVE-2020-0710] [CVE-2020-0711] [CVE-2020-0712] [CVE-2020-0713] [CVE-2020-0767]
chakrabot
pushed a commit
that referenced
this pull request
Feb 14, 2020
…eb release Merge pull request #6375 from akroshg:servicing/2002 Fixes following CVEs [CVE-2020-0710] [CVE-2020-0711] [CVE-2020-0712] [CVE-2020-0713] [CVE-2020-0767]
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Fixes following CVEs
[CVE-2020-0710]
[CVE-2020-0711]
[CVE-2020-0712]
[CVE-2020-0713]
[CVE-2020-0767]