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fix(lwip): Adds nullchecks after DHCP server alloc'd pools

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This commit is contained in:
David Cermak
2026-07-09 16:04:37 +02:00
parent d45d04dc43
commit 880b4cc2e9
1 changed files with 8 additions and 0 deletions
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components/lwip/apps/dhcpserver/dhcpserver.c
+8
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@@ -1239,11 +1239,19 @@ static s16_t parse_msg(dhcps_t *dhcps, struct dhcps_msg *m, u16_t len)
pnode = NULL; pnode = NULL;
} else { } else {
pdhcps_pool = (struct dhcps_pool *)mem_calloc(1, sizeof(struct dhcps_pool)); pdhcps_pool = (struct dhcps_pool *)mem_calloc(1, sizeof(struct dhcps_pool));
if (pdhcps_pool == NULL) {
return 0;
}
pdhcps_pool->ip.addr = dhcps->client_address.addr; pdhcps_pool->ip.addr = dhcps->client_address.addr;
memcpy(pdhcps_pool->mac, m->chaddr, sizeof(pdhcps_pool->mac)); memcpy(pdhcps_pool->mac, m->chaddr, sizeof(pdhcps_pool->mac));
pdhcps_pool->lease_timer = lease_timer; pdhcps_pool->lease_timer = lease_timer;
pnode = (list_node *)mem_calloc(1, sizeof(list_node)); pnode = (list_node *)mem_calloc(1, sizeof(list_node));
if (pnode == NULL) {
mem_free(pdhcps_pool);
pdhcps_pool = NULL;
return 0;
}
pnode->pnode = pdhcps_pool; pnode->pnode = pdhcps_pool;
pnode->pnext = NULL; pnode->pnext = NULL;