Thread: Does firmware update 5.9.6 survive jailbreak?
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Old 06-08-2018, 07:03 PM   #13
NullNix
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Posts: 929
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Join Date: Jan 2013
Location: Ely, Cambridgeshire, UK
Device: Kindle Oasis 3, Kindle Oasis 1
Quote:
Originally Posted by NiLuJe View Post
Huh. Is hell freezing over or is that Amazon implementing a 10 year-old user request?

The potentially crashiest of them all, to boot.
It looks like they're validating the font at least to some degree and renaming it out of the way if it looks like it might crash something. (Though I do wonder if one jailbreak route might now be to look at the FreeType git commit logs and write a font that exploits one of the extremely numerous overflows and fuzz-detected problems found in FreeType, then load it using this new mechanism before they release a new firmware using a FreeType new enough to contain that commit. Is whatever they're using to detect problematic fonts *that* good, I wonder? )
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