Difference between revisions of "KHeapChunkHeader"

Latest revision as of 06:02, 15 October 2015

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-This is the header stored at the beginning of unused blocks of FCRAM memory. The kernel maintains these structures to keep a list of free blocks and their sizes.
+#REDIRECT [[MemoryBlockHeader]]
-By overwriting the pointers in instances of this struct (e.g. using an attack like gspwn) and then (de)allocating memory, one can achieve a controlled ARM11 kernel-mode write on system versions up to 9.2 ([[3DS_System_Flaws#Kernel11|memchunkhax]]).
-Size : 0xC bytes?
-{| class="wikitable" border="1"
-|-
-!  Offset
-! Type
-!  Description
-|-
-| 0x0
-| u32
-| Size in pages
-|-
-| 0x4
-| KHeapHeader*
-| Next
-|-
-| 0x8
-| KHeapHeader*
-| Prev
-|}