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Reject invalid segment registers

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Alexis Engelke
2019-11-02 21:11:35 +01:00
parent e2026b572d
commit ab2d60da75
1 changed files with 3 additions and 0 deletions
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3
decode.c
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@@ -610,6 +610,9 @@ fd_decode(const uint8_t* buffer, size_t len_sz, int mode_int, uintptr_t address,
if (reg_type == FD_RT_GPL && !(prefixes & PREFIX_REX) && if (reg_type == FD_RT_GPL && !(prefixes & PREFIX_REX) &&
instr->operands[i].size == 1 && instr->operands[i].reg >= 4) instr->operands[i].size == 1 && instr->operands[i].reg >= 4)
reg_type = FD_RT_GPH; reg_type = FD_RT_GPH;
// Reject invalid segment registers
if (reg_type == FD_RT_SEG && instr->operands[i].reg >= 6)
return -1;
instr->operands[i].misc = reg_type; instr->operands[i].misc = reg_type;
} }