libs/rt-thread
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[components] [fdt] add parameter check

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Mengxi-Xu 2023-06-05 01:50:04 +08:00 committed by GitHub
parent 1c7e7738a7
commit d2308d41d7
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1 changed files with 3 additions and 1 deletions
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components/drivers/fdt/libfdt/fdt_rw.c
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@ -96,7 +96,9 @@ static int _fdt_splice(void *fdt, void *splicepoint, int oldlen, int newlen)
{ {
char *p = splicepoint; char *p = splicepoint;
char *end = (char *)fdt + _fdt_data_size(fdt); char *end = (char *)fdt + _fdt_data_size(fdt);
if (oldlen <= 0)
return -FDT_ERR_BADOFFSET;
if (((p + oldlen) < p) || ((p + oldlen) > end)) if (((p + oldlen) < p) || ((p + oldlen) > end))
return -FDT_ERR_BADOFFSET; return -FDT_ERR_BADOFFSET;
if ((p < (char *)fdt) || ((end - oldlen + newlen) < (char *)fdt)) if ((p < (char *)fdt) || ((end - oldlen + newlen) < (char *)fdt))