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Prevent reading more bytes than the SIB memory has

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MCUdude
2023-08-03 14:42:37 +02:00
parent a1bfae3f8e
commit 1e4d78f17d
1 changed files with 5 additions and 0 deletions
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5
src/jtag3.c
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@@ -2173,6 +2173,11 @@ static int jtag3_read_byte(const PROGRAMMER *pgm, const AVRPART *p, const AVRMEM
if (pgm->flag & PGM_FL_IS_DW)
unsupp = 1;
} else if (str_eq(mem->desc, "sib")) {
if(addr >= AVR_SIBLEN) {
pmsg_error("cannot read byte from %s sib as address 0x%04lx outside range [0, 0x%04x]\n",
p->desc, addr, AVR_SIBLEN-1);
return -1;
}
if(!*PDATA(pgm)->sib_string) {
pmsg_error("cannot read byte from %s sib as memory not initialised\n", p->desc);
return -1;