This is the header stored in FCRAM for each FCRAM heap chunk. The kernel maintains this structure. An attack like gspwn can overwrite this header, and exploit the kernel pre 9.3 (memchunkhax).
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This is the header stored in FCRAM for each FCRAM heap chunk. The kernel maintains this structure.
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An attack like gspwn can be used to overwrite instances of this header in order to exploit the ARM11 kernel on system versions below 9.3 ([[3DS_System_Flaws#Kernel11|memchunkhax]]).