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dhcp_parse_reply: return ERR_VAL instead of asserting on offset-out-of-pbuf

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(cherry picked from commit 33466ee6a8)
This commit is contained in:
goldsimon 2017-03-30 22:30:27 +02:00
parent aecb1b9eb0
commit 56a295f0a0
1 changed files with 1 additions and 1 deletions
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src/core/ipv4/dhcp.c
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@ -1617,7 +1617,7 @@ decode_next:
offset_max -= q->len; offset_max -= q->len;
if ((offset < offset_max) && offset_max) { if ((offset < offset_max) && offset_max) {
q = q->next; q = q->next;
LWIP_ASSERT("next pbuf was null", q); LWIP_ERROR("next pbuf was null", q != NULL, return ERR_VAL;);
options = (u8_t*)q->payload; options = (u8_t*)q->payload;
} else { } else {
/* We've run out of bytes, probably no end marker. Don't proceed. */ /* We've run out of bytes, probably no end marker. Don't proceed. */