Developer Zecoxao has revealed a proof of concept for a “double free” memory corruption bug, but no fewer than two bugs have been revealed!
Zecoxao has just revealed a memory corruption PoC for the PS4, this bug has been patched on firmware 12.50, which seems to mean that this flaw is present on firmware 12.02 and 12.00 but also on firmwares below, it remains to be confirmed which lower firmwares are affected.
Another thing, this bug would be fixed on firmware 12.50 on PS4 but it is also present on PS5 up to firmware 11.00 . On PS4, according to the first files circulating, ELFs are offered on firmwares 11.02, 11.50, 11.52, 12.00 and 12.02.
But even more importantly, it seems that another kernel bug has been discovered, called UAF, and is believed to be present up to firmware 10.40 on PS5. We don’t know if this exploit is related to the one revealed by TheFlow, perhaps it has nothing to do with it, which could potentially bring the number of usable bugs to 3.
It remains to be confirmed whether all these bugs can actually be exploited.
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