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ensure: Validate buffer offset

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Max Bruckner
2017-03-23 21:35:24 +01:00
parent cc84a446be
commit 1934059554
1 changed files with 6 additions and 0 deletions
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cJSON.c
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@@ -253,6 +253,12 @@ static unsigned char* ensure(printbuffer * const p, size_t needed, const interna
return NULL; return NULL;
} }
if ((p->length > 0) && (p->offset >= p->length))
{
/* make sure that offset is valid */
return NULL;
}
if (needed > INT_MAX) if (needed > INT_MAX)
{ {
/* sizes bigger than INT_MAX are currently not supported */ /* sizes bigger than INT_MAX are currently not supported */