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arm9: fix loadDeliverArg bug

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This commit is contained in:
TuxSH 2025-05-11 22:24:34 +02:00
parent 8a6b766894
commit 581e591070
1 changed files with 3 additions and 1 deletions
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4
arm9/source/deliver_arg.c
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@ -71,7 +71,7 @@ u8 *loadDeliverArg(void)
bool hasMagic = memcmp(tlnc, "TLNC", 4) == 0;
u8 crcLen = tlnc[5];
u16 crc = *(u16 *)(tlnc + 6);
if (!hasMagic || crcLen <= 248 || crc != crc16(tlnc + 8, crcLen, 0xFFFF))
if (!hasMagic || (8 + crcLen) > 0x100 || crc != crc16(tlnc + 8, crcLen, 0xFFFF))
memset(tlnc, 0, 0x100);
memset(deliverArg + 0x400, 0, 0xC00);
@ -141,6 +141,8 @@ static bool configureHomebrewAutobootCtr(u8 *deliverArg)
return false;
u8 memtype = configData.autobootCtrAppmemtype;
// autobootCtrAppmemtype already checked, but it doesn't hurt to check again
memtype = memtype >= 5 ? 0 : memtype;
deliverArg[0x400] = ISN3DS ? appmemtypesN3ds[memtype] : appmemtypesO3ds[memtype];
// Determine whether to load from the SD card or from NAND. We don't support gamecards for this