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2421: ion/jit and extensions note

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Thorin-Oakenpants 2020-03-27 12:44:06 +00:00 committed by GitHub
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@ -1055,6 +1055,7 @@ user_pref("dom.vibrator.enabled", false);
* [6] https://rh0dev.github.io/blog/2017/the-return-of-the-jit/ ***/
user_pref("javascript.options.asmjs", false);
/* 2421: disable Ion and baseline JIT to help harden JS against exploits
* [NOTE] In FF75+ these no longer affect extensions (1599226)
* [WARNING] If false, causes the odd site issue and there is also a performance loss
* [1] https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0817 ***/
// user_pref("javascript.options.ion", false);